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Stainless Steel Welded Pipe (ASTM A312) Sch 10, Sch 40
Stainless Steel Welded Pipes manufactured to ASTM A312 standards. Features high dimensional accuracy, uniform wall thickness, and cost-effectiveness. Available in Grades 304 and 316L with Schedule 10S and 40S wall thicknesses.
High Performance
Industrial Material
Industrial Material
Reliable Performance: Stainless Steel Welded Pipes (ASTM A312)
Stainless Steel Welded Pipes are manufactured by rolling stainless steel plates and welding the seam (ERW/EFW). Complying with the ASTM A312 standard, these pipes offer a cost-effective alternative to seamless pipes while providing uniform wall thickness. Ideal for fluid, air, and chemical transport in various industrial settings.
Weight and Dimensions Chart: Stainless Steel Welded Pipes
Spec : ASTM A312 / A358 / A778 , ASME B36.19M
| NPS | OD (mm) | Nominal Wall Thickness | |||||
|---|---|---|---|---|---|---|---|
| Schedule 5S | Schedule 10S | Schedule 40S | |||||
| Thk (mm) | kg/m | Thk (mm) | kg/m | Thk (mm) | kg/m | ||
| 1/4 | 13.72 | - | - | 1.65 | 0.50 | 2.24 | 0.64 |
| 3/8 | 17.15 | - | - | 1.65 | 0.65 | 2.31 | 0.85 |
| 1/2 | 21.34 | 1.65 | 0.81 | 2.11 | 1.01 | 2.77 | 1.28 |
| 3/4 | 26.67 | 1.65 | 1.03 | 2.11 | 1.29 | 2.87 | 1.70 |
| 1 | 33.40 | 1.65 | 1.30 | 2.77 | 2.11 | 3.38 | 2.53 |
| 1 1/4 | 42.16 | 1.65 | 1.67 | 2.77 | 2.72 | 3.56 | 3.42 |
| 1 1/2 | 48.26 | 1.65 | 1.92 | 2.77 | 3.14 | 3.68 | 4.09 |
| 2 | 60.33 | 1.65 | 2.41 | 2.77 | 3.97 | 3.91 | 5.50 |
| 2 1/2 | 73.03 | 2.11 | 3.73 | 3.05 | 5.32 | 5.16 | 8.72 |
| 3 | 88.90 | 2.11 | 4.56 | 3.05 | 6.52 | 5.49 | 11.40 |
| 3 1/2 | 101.60 | 2.11 | 5.23 | 3.05 | 7.49 | 5.74 | 13.70 |
| 4 | 114.30 | 2.11 | 5.90 | 3.05 | 8.45 | 6.02 | 16.20 |
| 5 | 141.30 | 2.77 | 9.56 | 3.40 | 11.70 | 6.55 | 22.00 |
| 6 | 168.28 | 2.77 | 11.40 | 3.40 | 14.00 | 7.11 | 28.50 |
| 8 | 219.08 | 2.77 | 14.90 | 3.76 | 20.20 | 8.18 | 43.00 |
| 10 | 273.05 | 3.40 | 22.80 | 4.19 | 28.10 | 9.27 | 60.90 |
| 12 | 323.85 | 3.96 | 31.60 | 4.57 | 36.30 | 9.53 | 74.60 |
| 14 | 355.60 | 3.96 | 34.70 | 4.78 | 41.80 | 9.53 | 82.20 |
| 16 | 406.40 | 4.19 | 42.00 | 4.78 | 47.80 | 9.53 | 94.20 |
| 18 | 457.20 | 4.19 | 47.30 | 4.78 | 53.90 | 9.53 | 106.30 |
| 20 | 508.00 | 4.78 | 59.90 | 5.54 | 69.30 | 9.53 | 118.30 |
| 22 | 558.80 | 4.78 | 66.00 | 5.54 | 76.40 | - | - |
| 24 | 609.60 | 5.54 | 83.40 | 6.35 | 95.40 | 9.53 | 142.50 |
| 30 | 762.00 | 6.35 | 119.50 | 7.92 | 148.80 | - | - |
| 32 - 80 | Thickness 6.35 - 30.00 mm (Consult Sales) | ||||||
Tolerance Table
| Standard | Outside Diameter (OD) | Thickness | Length |
|---|---|---|---|
| CNS 6331 | < 30mm: ± 0.3mm / ≥ 30mm: ± 1% | < 2mm: ± 0.2mm / ≥ 2mm: ± 10% | Defined |
| JIS G3459 | ± 1% (Min ± 0.3mm) | ± 10% (Min ± 0.2mm) | Defined |
| ASTM A312 | ≤ 48.26: +0.4 / -0.8 mm > 48.26 - 114.3: ± 0.8 mm |
Nominal Thickness ± 12.5% | + 6.0 mm / - 0 mm |
| ASTM A358 | ± 0.5% | - 0.30 mm | L ≤ 7.3m: + 6 mm |
Frequently Asked Questions (FAQ)
Pipes (this product) are categorized by Nominal Pipe Size (NPS) and Schedule (wall thickness), designed primarily for fluid flow and pressure. Tubes are measured by exact Outside Diameter (OD) and focus on precision and aesthetics.
These numbers represent the Wall Thickness of the pipe. For the same NPS, Schedule 40 is thicker than Schedule 10, allowing it to withstand higher internal pressures, though it is heavier and more expensive.