Bao Tin Steel is a professional supplier of API 5L, ASTM A106 GrB standard seamless pipes, the thickness of SCH40, SCH80, and SCH160, and many accessories.
Below are seamless steel pipes manufactured according to API 5L and ASTM A106 GrB standards with thicknesses of SCH10, SCH20, SCH30, STD, SCH40, SCH60 XS, SCH80, SCH120, and SCH160 XXS.

Seamless steel pipes include the following types:
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Seamless steel pipe specifications from DN15 – DN800 x SCH 10
| No. | DN | Outer diameter (mm) |
Thickness SCH 10 (mm) |
Length (mm) |
| 1 | 15 | 21.3 | 2.11 | 6000 |
| 2 | 20 | 26.7 | 2.11 | 6000 |
| 3 | 25 | 33.4 | 2.77 | 6000 |
| 4 | 32 | 42.2 | 2.77 | 6000 |
| 5 | 40 | 48.3 | 2.77 | 6000 |
| 6 | 50 | 60.3 | 2.77 | 6000 |
| 7 | 65 | 73 | 3.05 | 6000 |
| 8 | 80 | 88.9 | 3.05 | 6000 |
| 9 | 100 | 114.3 | 3.05 | 6000 |
| 10 | 125 | 141.3 | 3.4 | 6000 |
| 11 | 150 | 168.3 | 3.4 | 6000 |
| 12 | 200 | 219.1 | 3.76 | 6000 |
| 13 | 250 | 273 | 4.19 | 6000 |
| 14 | 300 | 323.8 | 4.57 | 6000 |
| 15 | 350 | 355.6 | 6.35 | 6000 |
| 16 | 400 | 406.4 | 6.35 | 6000 |
| 17 | 450 | 457.2 | 6.35 | 6000 |
| 18 | 500 | 508 | 6.35 | 6000 |
| 19 | 550 | 558.8 | 6.35 | 6000 |
| 20 | 600 | 609.6 | 6.35 | 6000 |
| 21 | 650 | 660.4 | 7.92 | 6000 |
| 22 | 700 | 711.2 | 7.92 | 6000 |
| 23 | 750 | 762 | 7.92 | 6000 |
| 24 | 800 | 812.8 | 7.92 | 6000 |
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Seamless steel pipe specifications from DN200 – DN800 x SCH 20
| No. | DN | Outer diameter (mm) |
Thickness SCH 20 (mm) |
Length (mm) |
| 1 | 200 | 219.1 | 6.35 | 6000 |
| 2 | 250 | 273 | 6.35 | 6000 |
| 3 | 300 | 323.8 | 6.35 | 6000 |
| 4 | 350 | 355.6 | 7.92 | 6000 |
| 5 | 400 | 406.4 | 7.92 | 6000 |
| 6 | 450 | 457.2 | 7.92 | 6000 |
| 7 | 500 | 508 | 9.53 | 6000 |
| 8 | 550 | 558.8 | 9.53 | 6000 |
| 9 | 600 | 609.6 | 9.53 | 6000 |
| 10 | 650 | 660.4 | 12.7 | 6000 |
| 11 | 700 | 711.2 | 12.7 | 6000 |
| 12 | 750 | 762 | 12.7 | 6000 |
| 13 | 800 | 812.8 | 12.7 | 6000 |
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Seamless steel pipe specifications from DN15 – DN800 x SCH 30
| No. | DN | Outer diameter (mm) |
Thickness SCH 30 (mm) |
Length (mm) |
| 1 | 15 | 21.3 | 2.41 | 6000 |
| 2 | 20 | 26.7 | 2.41 | 6000 |
| 3 | 25 | 33.4 | 2.9 | 6000 |
| 4 | 32 | 42.2 | 2.97 | 6000 |
| 5 | 40 | 48.3 | 3.18 | 6000 |
| 6 | 50 | 60.3 | 3.18 | 6000 |
| 7 | 65 | 73 | 4.78 | 6000 |
| 8 | 80 | 88.9 | 4.78 | 6000 |
| 9 | 100 | 114.3 | 4.78 | 6000 |
| 10 | 125 | 141.3 | 6000 | |
| 11 | 150 | 168.3 | 6000 | |
| 12 | 200 | 219.1 | 7.07 | 6000 |
| 13 | 250 | 273 | 7.8 | 6000 |
| 14 | 300 | 323.8 | 8.38 | 6000 |
| 15 | 350 | 355.6 | 9.53 | 6000 |
| 16 | 400 | 406.4 | 9.53 | 6000 |
| 17 | 450 | 457.2 | 11.13 | 6000 |
| 18 | 500 | 508 | 12.7 | 6000 |
| 19 | 550 | 558.8 | 12.7 | 6000 |
| 20 | 600 | 609.6 | 14.27 | 6000 |
| 21 | 650 | 660.4 | 6000 | |
| 22 | 700 | 711.2 | 15.88 | 6000 |
| 23 | 750 | 762 | 15.88 | 6000 |
| 24 | 800 | 812.8 | 15.88 | 6000 |
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Seamless steel pipe specifications from DN15 – DN800 x STD
| No. | DN | Outer diameter (mm) |
Thickness STD (mm) |
Length (mm) |
| 1 | 15 | 21.3 | 2.77 | 6000 |
| 2 | 20 | 26.7 | 2.87 | 6000 |
| 3 | 25 | 33.4 | 3.38 | 6000 |
| 4 | 32 | 42.2 | 3.56 | 6000 |
| 5 | 40 | 48.3 | 3.68 | 6000 |
| 6 | 50 | 60.3 | 3.91 | 6000 |
| 7 | 65 | 73 | 5.16 | 6000 |
| 8 | 80 | 88.9 | 5.49 | 6000 |
| 9 | 100 | 114.3 | 6.02 | 6000 |
| 10 | 125 | 141.3 | 6.55 | 6000 |
| 11 | 150 | 168.3 | 7.11 | 6000 |
| 12 | 200 | 219.1 | 8.18 | 6000 |
| 13 | 250 | 273 | 9.27 | 6000 |
| 14 | 300 | 323.8 | 9.53 | 6000 |
| 15 | 350 | 355.6 | 9.53 | 6000 |
| 16 | 400 | 406.4 | 9.53 | 6000 |
| 17 | 450 | 457.2 | 9.53 | 6000 |
| 18 | 500 | 508 | 9.53 | 6000 |
| 19 | 550 | 558.8 | 9.53 | 6000 |
| 20 | 600 | 609.6 | 9.53 | 6000 |
| 21 | 650 | 660.4 | 9.53 | 6000 |
| 22 | 700 | 711.2 | 9.53 | 6000 |
| 23 | 750 | 762 | 9.53 | 6000 |
| 24 | 800 | 812.8 | 9.53 | 6000 |
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Seamless steel pipe specifications from DN15 – DN800 x SCH 40
| No. | DN | Outer diameter (mm) |
Thickness SCH 40 (mm) |
Length (mm) |
| 1 | 15 | 21.3 | 2.77 | 6000 |
| 2 | 20 | 26.7 | 2.87 | 6000 |
| 3 | 25 | 33.4 | 3.38 | 6000 |
| 4 | 32 | 42.2 | 3.56 | 6000 |
| 5 | 40 | 48.3 | 3.68 | 6000 |
| 6 | 50 | 60.3 | 3.91 | 6000 |
| 7 | 65 | 73 | 5.16 | 6000 |
| 8 | 80 | 88.9 | 5.49 | 6000 |
| 9 | 100 | 114.3 | 6.02 | 6000 |
| 10 | 125 | 141.3 | 6.55 | 6000 |
| 11 | 150 | 168.3 | 7.11 | 6000 |
| 12 | 200 | 219.1 | 8.18 | 6000 |
| 13 | 250 | 273 | 9.27 | 6000 |
| 14 | 300 | 323.8 | 10.31 | 6000 |
| 15 | 350 | 355.6 | 11.13 | 6000 |
| 16 | 400 | 406.4 | 12.7 | 6000 |
| 17 | 450 | 457.2 | 14.27 | 6000 |
| 18 | 500 | 508 | 15.09 | 6000 |
| 19 | 550 | 558.8 | 15.09 | 6000 |
| 20 | 600 | 609.6 | 17.48 | 6000 |
| 21 | 650 | 660.4 | 6000 | |
| 22 | 700 | 711.2 | 6000 | |
| 23 | 750 | 762 | 6000 | |
| 24 | 800 | 812.8 | 17.48 | 6000 |
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Seamless steel pipe specifications from DN200 – DN600 x SCH 60
| No. | DN | Outer diameter (mm) |
Thickness SCH 60 (mm) |
Length (mm) |
| 1 | 200 | 219.1 | 10.31 | 6000 |
| 2 | 250 | 273 | 12.7 | 6000 |
| 3 | 300 | 323.8 | 14.27 | 6000 |
| 4 | 350 | 355.6 | 15.09 | 6000 |
| 5 | 400 | 406.4 | 16.66 | 6000 |
| 6 | 450 | 457.2 | 19.05 | 6000 |
| 7 | 500 | 508 | 20.62 | 6000 |
| 8 | 550 | 558.8 | 22.23 | 6000 |
| 9 | 600 | 609.6 | 24.61 | 6000 |
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Seamless steel pipe specifications from DN15 – DN800 x XS
| No. | DN | Outer diameter (mm) |
Thickness XS (mm) |
Length (mm) |
| 1 | 15 | 21.3 | 3.73 | 6000 |
| 2 | 20 | 26.7 | 3.91 | 6000 |
| 3 | 25 | 33.4 | 4.55 | 6000 |
| 4 | 32 | 42.2 | 4.85 | 6000 |
| 5 | 40 | 48.3 | 5.08 | 6000 |
| 6 | 50 | 60.3 | 5.54 | 6000 |
| 7 | 65 | 73 | 7.01 | 6000 |
| 8 | 80 | 88.9 | 7.62 | 6000 |
| 9 | 100 | 114.3 | 8.56 | 6000 |
| 10 | 125 | 141.3 | 9.53 | 6000 |
| 11 | 150 | 168.3 | 10.97 | 6000 |
| 12 | 200 | 219.1 | 12.7 | 6000 |
| 13 | 250 | 273 | 12.7 | 6000 |
| 14 | 300 | 323.8 | 12.7 | 6000 |
| 15 | 350 | 355.6 | 12.7 | 6000 |
| 16 | 400 | 406.4 | 12.7 | 6000 |
| 17 | 450 | 457.2 | 12.7 | 6000 |
| 18 | 500 | 508 | 12.7 | 6000 |
| 19 | 550 | 558.8 | 12.7 | 6000 |
| 20 | 600 | 609.6 | 12.7 | 6000 |
| 21 | 650 | 660.4 | 12.7 | 6000 |
| 22 | 700 | 711.2 | 12.7 | 6000 |
| 23 | 750 | 762 | 12.7 | 6000 |
| 24 | 800 | 812.8 | 12.7 | 6000 |
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Seamless steel pipe specifications from DN15 – DN600 x SCH 80
| No | DN | Outer diameter (mm) |
Thickness SCH 80 (mm) |
Length (mm) |
| 1 | 15 | 21.3 | 3.73 | 6000 |
| 2 | 20 | 26.7 | 3.91 | 6000 |
| 3 | 25 | 33.4 | 4.55 | 6000 |
| 4 | 32 | 42.2 | 4.85 | 6000 |
| 5 | 40 | 48.3 | 5.08 | 6000 |
| 6 | 50 | 60.3 | 5.54 | 6000 |
| 7 | 65 | 73 | 7.01 | 6000 |
| 8 | 80 | 88.9 | 7.62 | 6000 |
| 9 | 100 | 114.3 | 8.56 | 6000 |
| 10 | 125 | 141.3 | 9.53 | 6000 |
| 11 | 150 | 168.3 | 10.97 | 6000 |
| 12 | 200 | 219.1 | 12.7 | 6000 |
| 13 | 250 | 273 | 15.09 | 6000 |
| 14 | 300 | 323.8 | 17.48 | 6000 |
| 15 | 350 | 355.6 | 19.05 | 6000 |
| 16 | 400 | 406.4 | 21.44 | 6000 |
| 17 | 450 | 457.2 | 23.83 | 6000 |
| 18 | 500 | 508 | 26.19 | 6000 |
| 19 | 550 | 558.8 | 28.58 | 6000 |
| 20 | 600 | 609.6 | 30.96 | 6000 |
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Seamless steel pipe specifications from DN100 – DN600 x SCH 120
| No. | DN | Outer diameter (mm) |
Thickness SCH 120 (mm) |
Length (mm) |
| 1 | 100 | 114.3 | 11.13 | 6000 |
| 2 | 125 | 141.3 | 12.7 | 6000 |
| 3 | 150 | 168.3 | 14.27 | 6000 |
| 4 | 200 | 219.1 | 18.26 | 6000 |
| 5 | 250 | 273 | 21.44 | 6000 |
| 6 | 300 | 323.8 | 25.4 | 6000 |
| 7 | 350 | 355.6 | 27.79 | 6000 |
| 8 | 400 | 406.4 | 30.96 | 6000 |
| 9 | 450 | 457.2 | 34.93 | 6000 |
| 10 | 500 | 508 | 38.1 | 6000 |
| 11 | 550 | 558.8 | 41.28 | 6000 |
| 12 | 600 | 609.6 | 46.02 | 6000 |
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Seamless steel pipe specifications from DN15 – DN600 x SCH 160
| No. | DN | Outer diameter (mm) |
Thickness SCH 160 (mm) |
Length (mm) |
| 1 | 15 | 21.3 | 4.78 | 6000 |
| 2 | 20 | 26.7 | 5.56 | 6000 |
| 3 | 25 | 33.4 | 6.35 | 6000 |
| 4 | 32 | 42.2 | 6.35 | 6000 |
| 5 | 40 | 48.3 | 7.14 | 6000 |
| 6 | 50 | 60.3 | 8.74 | 6000 |
| 7 | 65 | 73 | 9.53 | 6000 |
| 8 | 80 | 88.9 | 11.13 | 6000 |
| 9 | 100 | 114.3 | 13.49 | 6000 |
| 10 | 125 | 141.3 | 15.88 | 6000 |
| 11 | 150 | 168.3 | 18.26 | 6000 |
| 12 | 200 | 219.1 | 23.01 | 6000 |
| 13 | 250 | 273 | 28.58 | 6000 |
| 14 | 300 | 323.8 | 33.32 | 6000 |
| 15 | 350 | 355.6 | 35.71 | 6000 |
| 16 | 400 | 406.4 | 40.19 | 6000 |
| 17 | 450 | 457.2 | 45.24 | 6000 |
| 18 | 500 | 508 | 50.01 | 6000 |
| 19 | 550 | 558.8 | 53.98 | 6000 |
| 20 | 600 | 609.6 | 59.54 | 6000 |
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Seamless steel pipe specifications from DN15 – DN300 x XXS
| No. | DN | Outer diameter (mm) |
Thickness XXS (mm) |
Length (mm) |
| 1 | 15 | 21.3 | 7.47 | 6000 |
| 2 | 20 | 26.7 | 7.82 | 6000 |
| 3 | 25 | 33.4 | 9.09 | 6000 |
| 4 | 32 | 42.2 | 9.7 | 6000 |
| 5 | 40 | 48.3 | 10.15 | 6000 |
| 6 | 50 | 60.3 | 11.07 | 6000 |
| 7 | 65 | 73 | 14.02 | 6000 |
| 8 | 80 | 88.9 | 15.25 | 6000 |
| 9 | 100 | 114.3 | 17.12 | 6000 |
| 10 | 125 | 141.3 | 19.05 | 6000 |
| 11 | 150 | 168.3 | 21.95 | 6000 |
| 12 | 200 | 219.1 | 22.23 | 6000 |
| 13 | 250 | 273 | 25.4 | 6000 |
| 14 | 300 | 323.8 | 25.4 | 6000 |
Above is the standard table and seamless steel table according to API 5L vs. ASTM A106 Gr B.
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