SSAB Form Tube 220

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General Product Description

SSAB Form Tube 220 is formable precision tube. It has over 20% higher elongation values and very narrow tolerances compared to competing products. Available in circular, rectangular, square and special shapes, it comes with different coating and surface options including cold rolled, galvanized, galvannealed and galfan. Customized shapes and other tailoring options are available upon request. Typically uses include light engineering, where formability, uniform quality, different surface options and usability are important.

Dimension Range

SSAB Form Tube 220 is available in circular, square, rectangular, flat oval and oval (elliptic) shapes.

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    Shapes Dimensions
    Circular (mmin) 16 - 88.90.63 - 3.50
    Square (mmin) 19x19 - 70x70
    Rectangular (mmin) 25x15 - 100x40
    Flat oval (mm) 25x15 - 78x38
    Oval, elliptic (mm) 22x16.5 - 31x17.5
    Wall thickness (mmin) 0.9 - 3.00.04 - 0.12
    Mill length (mm) 6000
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    Comparison

      Shapes
      Circular (mmin)
      Dimensions
      16 - 88.90.63 - 3.50
      Shapes
      Square (mmin)
      Dimensions
      19x19 - 70x70
      Shapes
      Rectangular (mmin)
      Dimensions
      25x15 - 100x40
      Shapes
      Flat oval (mm)
      Dimensions
      25x15 - 78x38
      Shapes
      Oval, elliptic (mm)
      Dimensions
      22x16.5 - 31x17.5
      Shapes
      Wall thickness (mmin)
      Dimensions
      0.9 - 3.00.04 - 0.12
      Shapes
      Mill length (mm)
      Dimensions
      6000

      Other shapes, sizes and lengths are available upon request.

      Circular Dimensions

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        Outer diameter (mmin) 0.9 mm (kg/m) 1.0 mm (kg/m) 1.25 mm (kg/m) 1.5 mm (kg/m) 2.0 mm (kg/m) 2.5 mm (kg/m) 3.0 mm (kg/m)
        160.63 0.335 0.370 0.455 0.536 0.691 1)
        180.71 0.380 0.419 0.516 0.610 0.789
        190.75 0.402 0.444 0.547 0.647 0.838
        200.79 0.424 0.469 0.578 0.684 0.888
        220.87 0.468 0.518 0.640 0.758 0.986 1.20 1.41 1)
        250.98 0.535 0.592 0.732 0.869 1.13 1.39 1.63 1)
        281.1 0.601 0.666 0.825 0.980 1.28 1.57 1.85
        301.2 0.646 0.715 0.886 1.05 1.38 1.70 2.00
        321.3 0.765 0.948 1.13 1.48 1.82 2.15
        351.4 0.838 1.04 1.24 1.63 2.00 2.37
        381.5 0.912 1.13 1.35 1.78 2.19 2.59
        401.6 0.962 1.20 1.42 1.87 2.31 2.74
        411.6 0.990 1.22 1.46 1.92 2.37 2.81
        41.51.63 0.999 1.24 1.48 1.95 2.40 2.85
        44.51.75 1.07 1.33 1.59 2.10 2.59 3.07
        481.9 1.44 1.72 2.27 2.81 3.33
        502.0 1.50 1.79 2.37 2.93 3.48
        50.82.00 1.53 1.82 2.41 2.98 3.54
        552.2 1.66 1.98 2.61 3.24 3.85
        572.2 1.72 2.05 2.71 3.36 4.00
        602.4 1.81 2.16 2.86 3.55 4.22
        702.8 2.53 3.35 4.16 4.96
        76.13.00 2.76 3.65 4.54 5.41
        88.93.50 4.29 5.33 6.36
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        Comparison

          1) Elongation A-value according to +CR2, 23%.

          Square Dimensions

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            Height x Width (mm) 1.0 mm (kg/m) 1.25 mm (kg/m) 1.5 mm (kg/m) 2.0 mm (kg/m) 2.5 mm (kg/m) 3.0 mm (kg/m)
            19 x 19 0.564 0.694 0.820 1.06 1)
            20 x 20 0.595 0.733 0.868 1.12 1)
            25 x 25 0.752 0.930 1.10 1.44 1.76
            30 x 30 0.909 1.13 1.34 1.75 2.15 2.39
            32 x 32 0.972 1.20 1.43 1.88 2.31 2.58
            35 x 35 1.07 1.32 1.57 2.07 2.54 2.86
            40 x 40 1.52 1.81 2.38 2.93 3.33
            50 x 50 1.91 2.28 3.01 3.72 4.28
            60 x 60 2.75 3.64 4.50 5.22
            70 x 70 4.26 5.29 6.16
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            Comparison

              1) Elongation A-value according to +CR2, 23%.

              Rectangular Dimensions

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                Height x Width (mm) 1.0 mm (kg/m) 1.25 mm (kg/m) 1.5 mm (kg/m) 2.0 mm (kg/m) 2.5 mm (kg/m) 3.0 mm (kg/m)
                25 x 15 0.595 0.733 0.868 1.12 1)
                30 x 10 0.595 0.733 0.868 1.12
                30 x 15 0.673 0.831 0.985 1.28
                30 x 20 0.752 0.930 1.10 1.44 1.76
                30 x 25 0.830 1.03 1.22 1.59 1.95
                35 x 15 0.752 0.930 1.10 1.44 1.76
                35 x 20 0.830 1.03 1.22 1.59 1.95 2.16
                40 x 20 0.909 1.13 1.34 1.75 2.15 2.39
                40 x 25 0.987 1.22 1.46 1.91 2.34 2.63
                40 x 30 1.07 1.32 1.57 2.07 2.54 2.86
                50 x 20 1.07 1.32 1.57 2.07 2.54 2.86
                50 x 25 1.42 1.69 2.22 2.74 3.10
                50 x 30 1.52 1.81 2.38 2.93 3.33
                50 x 40 1.71 2.05 2.69 3.33 3.80
                60 x 20 1.52 1.81 2.38 2.93 3.33
                60 x 30 1.71 2.05 2.69 3.33 3.80
                60 x 40 1.91 2.28 3.01 3.72 4.28
                70 x 25 2.16 2.85 3.52 4.04
                70 x 30 2.28 3.01 3.72 4.28
                70 x 50 2.75 3.64 4.50 5.22
                80 x 20 2.28 3.01 3.72 4.28
                80 x 30 2.52 3.32 4.11 4.74
                80 x 40 2.75 3.64 4.50 5.22
                80 x 60 4.26 5.29 6.16
                100 x 40 4.26 5.29 6.16
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                Comparison

                  1) Elongation A-value according to +CR2, 23%.

                  Flat Oval Dimensions

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                    Height x Width (mm) 0.9 mm (kg/m) 1.0 mm (kg/m) 1.25 mm (kg/m) 1.5 mm (kg/m) 2.0 mm (kg/m) 2.5 mm (kg/m) 3.0 mm (kg/m)
                    25 x 15 0.454 0.502 0.620 0.735 0.955 1)
                    30 x 15 0.525 0.581 0.718 0.853 1.11
                    35 x 15 0.596 0.659 0.816 0.970 1.269
                    38 x 20 0.678 0.751 0.931 1.11 1.45
                    40 x 20 0.783 0.971 1.155 1.516
                    40 x 25 0.827 1.03 1.22 1.61
                    45 x 25 0.906 1.125 1.340 1.762 2.172 2.570
                    50 x 20 0.940 1.167 1.391 1.830 2.256 2.671
                    60 x 15 1.052 1.307 1.559 2.054 2.537 3.007
                    78 x 38 1.918 2.292 3.032 3.759 4.473
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                    Comparison

                      1) Elongation A-value according to +CR2, 23%.

                      Oval Dimensions

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                        Height x Width (mm) 0.9 mm (kg/m) 1.0 mm (kg/m) 1.25 mm (kg/m) 1.5 mm (kg/m) 2.0 mm (kg/m)
                        22 x 16.5 0.407 0.450 0.555 0.657 0.851 1)
                        31 x 17.5 0.573 0.709 0.842 1.097
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                        Comparison

                          1) Elongation A-value according to +CR2, 23%.

                          Mechanical Properties

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                            Yield strength Rp0.2
                            (min MPa)
                            Tensile strength Rm
                            (min MPa)
                            Elongation A
                            (min %)
                            220 310 28 1)
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                            Comparison

                              Mechanical properties meet or exceed the requirements of EN 10305 (+CR2).

                              1) Value exceed the requirements of EN 10305.

                              Chemical Composition (ladle analysis)

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                                C
                                (max %)
                                Si 1)
                                (max %)
                                Mn
                                (max %)
                                P 1)
                                (max %)
                                S 2)
                                (max %)
                                Altot 3)
                                (min %)
                                0.10 0.05 0.70 0.020 2) 0.020 0.015
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                                Comparison

                                  Chemical composition meets or exceeds the requirements of EN 10305.

                                  If other chemical elements such as Ti, Nb or V are used, the content of these elements are reported in the inspection document.

                                  1) SSAB Form Tube C grade is suitable for high quality hot-dip galvanizing (Si < 0.03%, Si+2.5P < 0.06%). SSAB Form Tube H grade is suitable for high quality hot-dip galvanizing (Si < 0.03%, Si +2.5 P < 0.06%)

                                  2) Low level of impurities ensure excellent formability and weldability

                                  3) This requirement is not applicable provided the steel contains a sufficient amount of other nitrogen binding elements, such as Ti, Nb or V.

                                  Tolerances

                                  Tolerance Circular

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                                    Characteristic Circular precision tubes
                                    Tolerances meet or exceed the requirements of EN 10305-3
                                    Outside diameter (D) (1
                                    D < 20 mm
                                    20 ≤ D < 32 mm
                                    32 ≤ D < 44 mm
                                    44 ≤ D < 55 mm
                                    55 ≤ D < 70 mm
                                    70 ≤ D < 80 mm
                                    80 ≤ D < 100 mm

                                    ±0.12 mm
                                    ±0.15 mm
                                    ±0.20 mm
                                    ±0.25 mm
                                    ±0.30 mm
                                    ±0.35 mm
                                    ±0.40 mm
                                    Out-of-roundness The diameter tolerances include the out-of-roundness
                                    Thickness (T) T ≤ 1.5 mm: ±0.15 mm
                                    T >1.5 mm: ±10% of nominal thickness or ±0.35 mm whichever is the smaller
                                    Straightness Maximum 0.15% of measured length
                                    Height of internal weld bead, g;
                                    Bead removed
                                    Bead not removed

                                    g ≤ 0.3 mm
                                    g < 0.6 mm, when T ≤ 1.5 mm
                                    g < 0.4 x T, when 1.5 mm < T ≤ 3.0 mm
                                    Mill length 0/+50 mm, standard length 6000 mm
                                    Exact length, single cutting Agreed at the time of enquiry and order
                                    Exact length, bundle cutting Agreed at the time of enquiry and order
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                                    Comparison

                                      Characteristic
                                      Outside diameter (D) (1
                                      D < 20 mm
                                      20 ≤ D < 32 mm
                                      32 ≤ D < 44 mm
                                      44 ≤ D < 55 mm
                                      55 ≤ D < 70 mm
                                      70 ≤ D < 80 mm
                                      80 ≤ D < 100 mm
                                      Circular precision tubes
                                      Tolerances meet or exceed the requirements of EN 10305-3

                                      ±0.12 mm
                                      ±0.15 mm
                                      ±0.20 mm
                                      ±0.25 mm
                                      ±0.30 mm
                                      ±0.35 mm
                                      ±0.40 mm
                                      Characteristic
                                      Out-of-roundness
                                      Circular precision tubes
                                      Tolerances meet or exceed the requirements of EN 10305-3
                                      The diameter tolerances include the out-of-roundness
                                      Characteristic
                                      Thickness (T)
                                      Circular precision tubes
                                      Tolerances meet or exceed the requirements of EN 10305-3
                                      T ≤ 1.5 mm: ±0.15 mm
                                      T >1.5 mm: ±10% of nominal thickness or ±0.35 mm whichever is the smaller
                                      Characteristic
                                      Straightness
                                      Circular precision tubes
                                      Tolerances meet or exceed the requirements of EN 10305-3
                                      Maximum 0.15% of measured length
                                      Characteristic
                                      Height of internal weld bead, g;
                                      Bead removed
                                      Bead not removed
                                      Circular precision tubes
                                      Tolerances meet or exceed the requirements of EN 10305-3

                                      g ≤ 0.3 mm
                                      g < 0.6 mm, when T ≤ 1.5 mm
                                      g < 0.4 x T, when 1.5 mm < T ≤ 3.0 mm
                                      Characteristic
                                      Mill length
                                      Circular precision tubes
                                      Tolerances meet or exceed the requirements of EN 10305-3
                                      0/+50 mm, standard length 6000 mm
                                      Characteristic
                                      Exact length, single cutting
                                      Circular precision tubes
                                      Tolerances meet or exceed the requirements of EN 10305-3
                                      Agreed at the time of enquiry and order
                                      Characteristic
                                      Exact length, bundle cutting
                                      Circular precision tubes
                                      Tolerances meet or exceed the requirements of EN 10305-3
                                      Agreed at the time of enquiry and order

                                      1)For a maximum distance of 100 mm, the ends may, due to the cutting method, have diameters outside the tolerances.

                                      Tolerance Square

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                                        Characteristic Square precision tubes
                                        Tolerances meet or exceed the requirements of EN 10305-5
                                        Outside dimensions (H) and (B), longer side1)
                                        H < 25 mm
                                        25 ≤ H < 40 mm
                                        40 ≤ H < 60 mm
                                        60≤ H < 70 mm
                                        70 ≤ H < 80 mm

                                        ±0.20 mm
                                        ±0.25 mm
                                        ±0.30 mm
                                        ±0.35 mm
                                        ±0.40 mm
                                        Side concavity and convexity Included in outside dimension tolerance
                                        Thickness (T) T≤ 1.5 mm: ±0.15 mm
                                        T >1.5 mm: ±10% of nominal thickness or ±0.35 mm whichever is the smaller
                                        Straightness Maximum 0.15% of measured tube length when shorter side length > 30 mm
                                        Maximum 0.25% of measured tube length when the shorter side length ≤ 30 mm
                                        Location of weld seam from the centre line On narrow side for square and rectangular, optionally on wide side. On wide side for flat oval and ellipse. ± 10% of side length or ± 3 mm, whichever is greater.
                                        Height of internal weld bead, g;
                                        Bead removed
                                        Bead not removed

                                        g ≤ 0.3 mm
                                        g < 0.6 mm, when T ≤ 1.5 mm
                                        g < 0.4 x T, when 1.5 mm < T ≤ 3.0 mm
                                        Squareness of side 90° ±1°
                                        Corner profile R < 1.5 x T, when T ≤ 2.5 mm
                                        R < 2.2 x T, when T > 2.5 mm
                                        Twist (V) V ≤ 3 mm for B and H ≤ 30 mm
                                        V ≤ B/10 or ≤ H/10 for B or H > 30 mm
                                        Mill length 0/+50 mm, standard length 6000 mm
                                        Exact length, single cutting Agreed at the time of enquiry and order
                                        Exact length, bundle cutting Agreed at the time of enquiry and order
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                                        Comparison

                                          Characteristic
                                          Outside dimensions (H) and (B), longer side1)
                                          H < 25 mm
                                          25 ≤ H < 40 mm
                                          40 ≤ H < 60 mm
                                          60≤ H < 70 mm
                                          70 ≤ H < 80 mm
                                          Square precision tubes
                                          Tolerances meet or exceed the requirements of EN 10305-5

                                          ±0.20 mm
                                          ±0.25 mm
                                          ±0.30 mm
                                          ±0.35 mm
                                          ±0.40 mm
                                          Characteristic
                                          Side concavity and convexity
                                          Square precision tubes
                                          Tolerances meet or exceed the requirements of EN 10305-5
                                          Included in outside dimension tolerance
                                          Characteristic
                                          Thickness (T)
                                          Square precision tubes
                                          Tolerances meet or exceed the requirements of EN 10305-5
                                          T≤ 1.5 mm: ±0.15 mm
                                          T >1.5 mm: ±10% of nominal thickness or ±0.35 mm whichever is the smaller
                                          Characteristic
                                          Straightness
                                          Square precision tubes
                                          Tolerances meet or exceed the requirements of EN 10305-5
                                          Maximum 0.15% of measured tube length when shorter side length > 30 mm
                                          Maximum 0.25% of measured tube length when the shorter side length ≤ 30 mm
                                          Characteristic
                                          Location of weld seam from the centre line
                                          Square precision tubes
                                          Tolerances meet or exceed the requirements of EN 10305-5
                                          On narrow side for square and rectangular, optionally on wide side. On wide side for flat oval and ellipse. ± 10% of side length or ± 3 mm, whichever is greater.
                                          Characteristic
                                          Height of internal weld bead, g;
                                          Bead removed
                                          Bead not removed
                                          Square precision tubes
                                          Tolerances meet or exceed the requirements of EN 10305-5

                                          g ≤ 0.3 mm
                                          g < 0.6 mm, when T ≤ 1.5 mm
                                          g < 0.4 x T, when 1.5 mm < T ≤ 3.0 mm
                                          Characteristic
                                          Squareness of side
                                          Square precision tubes
                                          Tolerances meet or exceed the requirements of EN 10305-5
                                          90° ±1°
                                          Characteristic
                                          Corner profile
                                          Square precision tubes
                                          Tolerances meet or exceed the requirements of EN 10305-5
                                          R < 1.5 x T, when T ≤ 2.5 mm
                                          R < 2.2 x T, when T > 2.5 mm
                                          Characteristic
                                          Twist (V)
                                          Square precision tubes
                                          Tolerances meet or exceed the requirements of EN 10305-5
                                          V ≤ 3 mm for B and H ≤ 30 mm
                                          V ≤ B/10 or ≤ H/10 for B or H > 30 mm
                                          Characteristic
                                          Mill length
                                          Square precision tubes
                                          Tolerances meet or exceed the requirements of EN 10305-5
                                          0/+50 mm, standard length 6000 mm
                                          Characteristic
                                          Exact length, single cutting
                                          Square precision tubes
                                          Tolerances meet or exceed the requirements of EN 10305-5
                                          Agreed at the time of enquiry and order
                                          Characteristic
                                          Exact length, bundle cutting
                                          Square precision tubes
                                          Tolerances meet or exceed the requirements of EN 10305-5
                                          Agreed at the time of enquiry and order

                                          1)For a maximum distance of 100 mm, the ends may, due to the cutting method, have diameters outside the tolerances.

                                          Tolerance Rectangular

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                                            Characteristic Rectangular precision tubes
                                            Tolerances meet or exceed the requirements of EN 10305-5
                                            Outside dimensions (H) and (B), longer side1)
                                            H < 25 mm
                                            25 ≤ H < 40 mm
                                            40 ≤ H < 60 mm
                                            60≤ H < 70 mm
                                            70 ≤ H < 80 mm
                                            80 ≤ H < 90 mm
                                            90 ≤ H < 100 mm
                                            100 ≤ H < 120 mm

                                            ±0.20 mm
                                            ±0.25 mm
                                            ±0.30 mm
                                            ±0.35 mm
                                            ±0.40 mm
                                            ±0.50 mm
                                            ±0.60 mm
                                            ±0.65 mm
                                            Side concavity and convexity Included in outside dimension tolerance
                                            Thickness (T) T≤ 1.5 mm: ±0.15 mm
                                            T >1.5 mm: ±10% of nominal thickness or ±0.35 mm whichever is the smaller
                                            Straightness Maximum 0.15% of measured tube length when shorter side length > 30 mm
                                            Maximum 0.25% of measured tube length when the shorter side length ≤ 30 mm
                                            Location of weld seam from the centre line On narrow side for square and rectangular, optionally on wide side. On wide side for flat oval and ellipse. ± 10% of side length or ± 3 mm, whichever is greater.
                                            Height of internal weld bead, g;
                                            Bead removed
                                            Bead not removed

                                            g ≤ 0.3 mm
                                            g < 0.6 mm, when T ≤ 1.5 mm
                                            g < 0.4 x T, when 1.5 mm < T ≤ 3.0 mm
                                            Squareness of side 90° ±1°
                                            Corner profile R < 1.5 x T, when T ≤ 2.5 mm
                                            R < 2.2 x T, when T > 2.5 mm
                                            Twist (V) V ≤ 3 mm for B and H ≤ 30 mm
                                            V ≤ B/10 or ≤ H/10 for B or H > 30 mm
                                            Mill length 0/+50 mm, standard length 6000 mm
                                            Exact length, single cutting Agreed at the time of enquiry and order
                                            Exact length, bundle cutting Agreed at the time of enquiry and order
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                                            Comparison

                                              Characteristic
                                              Outside dimensions (H) and (B), longer side1)
                                              H < 25 mm
                                              25 ≤ H < 40 mm
                                              40 ≤ H < 60 mm
                                              60≤ H < 70 mm
                                              70 ≤ H < 80 mm
                                              80 ≤ H < 90 mm
                                              90 ≤ H < 100 mm
                                              100 ≤ H < 120 mm
                                              Rectangular precision tubes
                                              Tolerances meet or exceed the requirements of EN 10305-5

                                              ±0.20 mm
                                              ±0.25 mm
                                              ±0.30 mm
                                              ±0.35 mm
                                              ±0.40 mm
                                              ±0.50 mm
                                              ±0.60 mm
                                              ±0.65 mm
                                              Characteristic
                                              Side concavity and convexity
                                              Rectangular precision tubes
                                              Tolerances meet or exceed the requirements of EN 10305-5
                                              Included in outside dimension tolerance
                                              Characteristic
                                              Thickness (T)
                                              Rectangular precision tubes
                                              Tolerances meet or exceed the requirements of EN 10305-5
                                              T≤ 1.5 mm: ±0.15 mm
                                              T >1.5 mm: ±10% of nominal thickness or ±0.35 mm whichever is the smaller
                                              Characteristic
                                              Straightness
                                              Rectangular precision tubes
                                              Tolerances meet or exceed the requirements of EN 10305-5
                                              Maximum 0.15% of measured tube length when shorter side length > 30 mm
                                              Maximum 0.25% of measured tube length when the shorter side length ≤ 30 mm
                                              Characteristic
                                              Location of weld seam from the centre line
                                              Rectangular precision tubes
                                              Tolerances meet or exceed the requirements of EN 10305-5
                                              On narrow side for square and rectangular, optionally on wide side. On wide side for flat oval and ellipse. ± 10% of side length or ± 3 mm, whichever is greater.
                                              Characteristic
                                              Height of internal weld bead, g;
                                              Bead removed
                                              Bead not removed
                                              Rectangular precision tubes
                                              Tolerances meet or exceed the requirements of EN 10305-5

                                              g ≤ 0.3 mm
                                              g < 0.6 mm, when T ≤ 1.5 mm
                                              g < 0.4 x T, when 1.5 mm < T ≤ 3.0 mm
                                              Characteristic
                                              Squareness of side
                                              Rectangular precision tubes
                                              Tolerances meet or exceed the requirements of EN 10305-5
                                              90° ±1°
                                              Characteristic
                                              Corner profile
                                              Rectangular precision tubes
                                              Tolerances meet or exceed the requirements of EN 10305-5
                                              R < 1.5 x T, when T ≤ 2.5 mm
                                              R < 2.2 x T, when T > 2.5 mm
                                              Characteristic
                                              Twist (V)
                                              Rectangular precision tubes
                                              Tolerances meet or exceed the requirements of EN 10305-5
                                              V ≤ 3 mm for B and H ≤ 30 mm
                                              V ≤ B/10 or ≤ H/10 for B or H > 30 mm
                                              Characteristic
                                              Mill length
                                              Rectangular precision tubes
                                              Tolerances meet or exceed the requirements of EN 10305-5
                                              0/+50 mm, standard length 6000 mm
                                              Characteristic
                                              Exact length, single cutting
                                              Rectangular precision tubes
                                              Tolerances meet or exceed the requirements of EN 10305-5
                                              Agreed at the time of enquiry and order
                                              Characteristic
                                              Exact length, bundle cutting
                                              Rectangular precision tubes
                                              Tolerances meet or exceed the requirements of EN 10305-5
                                              Agreed at the time of enquiry and order

                                              1)For a maximum distance of 100 mm, the ends may, due to the cutting method, have diameters outside the tolerances.

                                              Tolerance Flat Oval

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                                                Characteristic Flat oval precision tubes
                                                Tolerances meet or exceed the requirements of EN 10305-5
                                                Outside dimensions (H) and (B), longer side1)
                                                H < 25 mm
                                                25 ≤ H < 40 mm
                                                40 ≤ H < 60 mm
                                                60≤ H < 70 mm
                                                70 ≤ H < 80 mm
                                                80 ≤ H < 90 mm
                                                90 ≤ H < 100 mm
                                                100 ≤ H < 120 mm

                                                ±0.20 mm
                                                ±0.25 mm
                                                ±0.30 mm
                                                ±0.35 mm
                                                ±0.40 mm
                                                Concavity/convexity Included in outside dimension tolerance
                                                Thickness (T) T≤ 1.5 mm: ±0.15 mm
                                                T >1.5 mm: ±10% of nominal thickness or ±0.35 mm whichever is the smaller
                                                Straightness Maximum 0.15% of measured tube length when shorter side length > 30 mm
                                                Maximum 0.25% of measured tube length when the shorter side length ≤ 30 mm
                                                Location of weld seam from the centre line On wide side for flat oval and ellipse. ± 10% of side length or ± 3 mm, whichever is greater.
                                                Height of internal weld bead, g;
                                                Bead removed
                                                Bead not removed

                                                g ≤ 0.3 mm
                                                g < 0.6 mm, when T ≤ 1.5 mm
                                                g < 0.4 x T, when 1.5 mm < T ≤ 3.0 mm
                                                Mill length 0/+50 mm, standard length 6000 mm
                                                Exact length, single cutting Agreed at the time of enquiry and order
                                                Exact length, bundle cutting Agreed at the time of enquiry and order
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                                                Select one parameter to compare

                                                Comparison

                                                  Characteristic
                                                  Outside dimensions (H) and (B), longer side1)
                                                  H < 25 mm
                                                  25 ≤ H < 40 mm
                                                  40 ≤ H < 60 mm
                                                  60≤ H < 70 mm
                                                  70 ≤ H < 80 mm
                                                  80 ≤ H < 90 mm
                                                  90 ≤ H < 100 mm
                                                  100 ≤ H < 120 mm
                                                  Flat oval precision tubes
                                                  Tolerances meet or exceed the requirements of EN 10305-5

                                                  ±0.20 mm
                                                  ±0.25 mm
                                                  ±0.30 mm
                                                  ±0.35 mm
                                                  ±0.40 mm
                                                  Characteristic
                                                  Concavity/convexity
                                                  Flat oval precision tubes
                                                  Tolerances meet or exceed the requirements of EN 10305-5
                                                  Included in outside dimension tolerance
                                                  Characteristic
                                                  Thickness (T)
                                                  Flat oval precision tubes
                                                  Tolerances meet or exceed the requirements of EN 10305-5
                                                  T≤ 1.5 mm: ±0.15 mm
                                                  T >1.5 mm: ±10% of nominal thickness or ±0.35 mm whichever is the smaller
                                                  Characteristic
                                                  Straightness
                                                  Flat oval precision tubes
                                                  Tolerances meet or exceed the requirements of EN 10305-5
                                                  Maximum 0.15% of measured tube length when shorter side length > 30 mm
                                                  Maximum 0.25% of measured tube length when the shorter side length ≤ 30 mm
                                                  Characteristic
                                                  Location of weld seam from the centre line
                                                  Flat oval precision tubes
                                                  Tolerances meet or exceed the requirements of EN 10305-5
                                                  On wide side for flat oval and ellipse. ± 10% of side length or ± 3 mm, whichever is greater.
                                                  Characteristic
                                                  Height of internal weld bead, g;
                                                  Bead removed
                                                  Bead not removed
                                                  Flat oval precision tubes
                                                  Tolerances meet or exceed the requirements of EN 10305-5

                                                  g ≤ 0.3 mm
                                                  g < 0.6 mm, when T ≤ 1.5 mm
                                                  g < 0.4 x T, when 1.5 mm < T ≤ 3.0 mm
                                                  Characteristic
                                                  Mill length
                                                  Flat oval precision tubes
                                                  Tolerances meet or exceed the requirements of EN 10305-5
                                                  0/+50 mm, standard length 6000 mm
                                                  Characteristic
                                                  Exact length, single cutting
                                                  Flat oval precision tubes
                                                  Tolerances meet or exceed the requirements of EN 10305-5
                                                  Agreed at the time of enquiry and order
                                                  Characteristic
                                                  Exact length, bundle cutting
                                                  Flat oval precision tubes
                                                  Tolerances meet or exceed the requirements of EN 10305-5
                                                  Agreed at the time of enquiry and order

                                                  1)For a maximum distance of 100 mm, the ends may, due to the cutting method, have diameters outside the tolerances.

                                                  Tolerance Oval

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                                                    Characteristic Oval (elliptic) precision tubes
                                                    Tolerances meet or exceed the requirements of EN 10305-5
                                                    Outside dimensions (H) and (B), longer side1)
                                                    H < 25 mm
                                                    25 ≤ H < 40 mm
                                                    40 ≤ H < 60 mm
                                                    60≤ H < 70 mm
                                                    70 ≤ H < 80 mm
                                                    80 ≤ H < 90 mm
                                                    90 ≤ H < 100 mm
                                                    100 ≤ H < 120 mm

                                                    ±0.20 mm
                                                    ±0.25 mm
                                                    Concavity/convexity Included in outside dimension tolerance
                                                    Thickness (T) T ≤ 1.5 mm: ±0.15 mm
                                                    T >1.5 mm: ±10% of nominal thickness or ±0.35 mm whichever is the smaller
                                                    Straightness Maximum 0.15% of measured tube length when shorter side length > 30 mm
                                                    Maximum 0.25% of measured tube length when the shorter side length ≤ 30 mm
                                                    Location of weld seam from the centre line On wide side for flat oval and ellipse. ± 10% of side length or ± 3 mm, whichever is greater.
                                                    Height of internal weld bead, g;
                                                    Bead removed
                                                    Bead not removed

                                                    g ≤ 0.3 mm
                                                    g < 0.6 mm, when T ≤ 1.5 mm
                                                    g < 0.4 x T, when 1.5 mm < T ≤ 3.0 mm
                                                    Mill length 0/+50 mm, standard length 6000 mm
                                                    Exact length, single cutting Agreed at the time of enquiry and order
                                                    Exact length, bundle cutting Agreed at the time of enquiry and order
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                                                    Comparison

                                                      Characteristic
                                                      Outside dimensions (H) and (B), longer side1)
                                                      H < 25 mm
                                                      25 ≤ H < 40 mm
                                                      40 ≤ H < 60 mm
                                                      60≤ H < 70 mm
                                                      70 ≤ H < 80 mm
                                                      80 ≤ H < 90 mm
                                                      90 ≤ H < 100 mm
                                                      100 ≤ H < 120 mm
                                                      Oval (elliptic) precision tubes
                                                      Tolerances meet or exceed the requirements of EN 10305-5

                                                      ±0.20 mm
                                                      ±0.25 mm
                                                      Characteristic
                                                      Concavity/convexity
                                                      Oval (elliptic) precision tubes
                                                      Tolerances meet or exceed the requirements of EN 10305-5
                                                      Included in outside dimension tolerance
                                                      Characteristic
                                                      Thickness (T)
                                                      Oval (elliptic) precision tubes
                                                      Tolerances meet or exceed the requirements of EN 10305-5
                                                      T ≤ 1.5 mm: ±0.15 mm
                                                      T >1.5 mm: ±10% of nominal thickness or ±0.35 mm whichever is the smaller
                                                      Characteristic
                                                      Straightness
                                                      Oval (elliptic) precision tubes
                                                      Tolerances meet or exceed the requirements of EN 10305-5
                                                      Maximum 0.15% of measured tube length when shorter side length > 30 mm
                                                      Maximum 0.25% of measured tube length when the shorter side length ≤ 30 mm
                                                      Characteristic
                                                      Location of weld seam from the centre line
                                                      Oval (elliptic) precision tubes
                                                      Tolerances meet or exceed the requirements of EN 10305-5
                                                      On wide side for flat oval and ellipse. ± 10% of side length or ± 3 mm, whichever is greater.
                                                      Characteristic
                                                      Height of internal weld bead, g;
                                                      Bead removed
                                                      Bead not removed
                                                      Oval (elliptic) precision tubes
                                                      Tolerances meet or exceed the requirements of EN 10305-5

                                                      g ≤ 0.3 mm
                                                      g < 0.6 mm, when T ≤ 1.5 mm
                                                      g < 0.4 x T, when 1.5 mm < T ≤ 3.0 mm
                                                      Characteristic
                                                      Mill length
                                                      Oval (elliptic) precision tubes
                                                      Tolerances meet or exceed the requirements of EN 10305-5
                                                      0/+50 mm, standard length 6000 mm
                                                      Characteristic
                                                      Exact length, single cutting
                                                      Oval (elliptic) precision tubes
                                                      Tolerances meet or exceed the requirements of EN 10305-5
                                                      Agreed at the time of enquiry and order
                                                      Characteristic
                                                      Exact length, bundle cutting
                                                      Oval (elliptic) precision tubes
                                                      Tolerances meet or exceed the requirements of EN 10305-5
                                                      Agreed at the time of enquiry and order

                                                      1)For a maximum distance of 100 mm, the ends may, due to the cutting method, have diameters outside the tolerances.

                                                      Surface designation and general usability

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                                                        Designation Definition Usability
                                                        C Cold rolled Suitable for painting and chromium plating
                                                        H Hot rolled and pickled Suitable for painting and hot-dip galvanizing
                                                        Z Zinc coated (zinc 99%) Suitable when corrosion resistance is required
                                                        ZA Galfan coated (zinc 95%-aluminium 5%) Suitable when corrosion resistance and demanding forming are required
                                                        ZF Galvannealed coated (zinc 90%-iron 10%) Suitable when corrosion resistance and paintability are required
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                                                          Surface is slightly oiled to protect it from corrosion during transportation and short-term storage. By request, tubes can be delivered dry, however in that case SSAB will not be responsible for any possible rust.

                                                          Surface roughness, Ra

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                                                            Designation Ra value
                                                            C < 0.6 µm
                                                            H < 2.0 µm
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                                                              Designation
                                                              C
                                                              Ra value
                                                              < 0.6 µm
                                                              Designation
                                                              H
                                                              Ra value
                                                              < 2.0 µm

                                                              Different metal coatings and minimum coating mass

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                                                                Coating thickness 1)(µm) Zinc (Z) 2) (g/m2) Galfan (ZA) 2) (g/m2) Galvannealed (ZF) 2) (g/m2)
                                                                7 Z100 ZF100
                                                                8 ZF120
                                                                10 Z140 ZA130 ZF140
                                                                20 Z275 ZA255
                                                                25 Z350 ZA300
                                                                32 Z450
                                                                42 Z600
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                                                                  Galfan coating ZA255 by SSAB has been granted a C3 15 (years) certification by RISE, Research Institute of Sweden AB.

                                                                  1) Theoretical guidance values for coating thickness per surface.

                                                                  2) Minimum coating mass - g/m2 refers the total weight of coatings on both sides of a 1 m2 plate.

                                                                  Indicative specification for proper coating selection

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                                                                    Coating type Coating mass (g/m2) Coating life - marine (year) Properties
                                                                    Z 100 10 Good weldability and formability with tolerable corrosion resistance.
                                                                    Z 275 25 Good combination of corrosion resistance and usability.
                                                                    Z 350 30 Excellent corrosion resistance.
                                                                    Z 450 40 Excellent corrosion resistance.
                                                                    Z 600 60 Superior corrosion resistance.
                                                                    ZA 130 40 Excellent corrosion resistance and formability.
                                                                    ZA 255 80 Superior corrosion resistance in marine condition.
                                                                    ZA 300 95 Superior corrosion resistance in marine condition.
                                                                    ZF 100 15 Superior paint adhesion and corrosion reistance as painted. Weldability in same level as cold rolled material under proper welding conditions.
                                                                    ZF 120 17 Superior paint adhesion and corrosion reistance as painted. Weldability in same level as cold rolled material under proper welding conditions.
                                                                    ZF 140 20 Superior paint adhesion and corrosion reistance as painted. Weldability in same level as cold rolled material under proper welding conditions.
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