Welded Pipe & Tube
Stainless steel welded pipes and tubes are manufactured by welding together stainless steel plates or coils, resulting in a longitudinal seam along its length. Welded pipes and tubes can be produced in various sizes and shapes, including round, square, and rectangular, to meet different industrial and commercial requirements.Stainless steel welded pipes and tubes offer several advantages over seamless ones. They are more cost-effective, as the production process is simpler and requires less material. They also offer improved consistency in wall thickness, making them ideal for applications that require precise measurements.
Stainless steel welded pipes and tubes are commonly used in various industries such as oil and gas, chemical processing, food and beverage, and pharmaceuticals. They are known for their excellent corrosion resistance and durability, making them suitable for use in harsh and corrosive environments.
Specification of Welded Pipe & Tube Types
- Types : Welded & ERW Pipes & Tubes
- Outer Dia size : 8 mm ~ 508 mm
- Thickness : 0.50 mm ~ 30 mm
- Length : Up to 12 Meter, Regular production order lengths are 6.0 / 6.1 Meter
- Specification : ASTM A312, A778, A269, A249, A554, A358 Cl-1, A358 Cl-3
- Pipe End : Plain, Beveled
- Grades : 201, 202, 304, 304L, 316L, 310, 321, 316Ti, 347, 904L, UNS s31803
- Application : Industrial use (Sugar, Paper, Irrigation)
Welded Pipe & Tube Dimensions
| NPS | Outside Diameter | Nominal Wall Thickness | ||||||||
| Designator | in. | mm | Schedule 5S | Schedule 10S | Schedule 40S | Schedule 80S | ||||
| in. | mm | in. | mm | in. | mm | in. | mm | |||
| 1/8 | 0.41 | 10.29 | … | … | 0.049 | 1.24 | 0.068 | 1.73 | 0.095 | 2.41 |
| 1/4 | 0.54 | 13.72 | … | … | 0.065 | 1.65 | 0.088 | 2.24 | 0.119 | 3.02 |
| 3/8 | 0.68 | 17.15 | … | … | 0.065 | 1.65 | 0.091 | 2.31 | 0.126 | 3.2 |
| 1/2 | 0.84 | 21.34 | 0.065 | 1.65 | 0.083 | 2.11 | 0.109 | 2.77 | 0.147 | 3.73 |
| 3/4 | 4.05 | 26.67 | 0.065 | 1.65 | 0.083 | 2.11 | 0.113 | 2.87 | 0.154 | 3.91 |
| 1 | 1.32 | 33.4 | 0.065 | 1.65 | 0.109 | 2.77 | 0.133 | 3.38 | 0.179 | 4.55 |
| 1 1/4 | 1.66 | 42.16 | 0.065 | 1.65 | 0.109 | 2.77 | 0.14 | 3.56 | 0.191 | 4.85 |
| 1 1/2 | 1.90 | 48.26 | 0.065 | 1.65 | 0.109 | 2.77 | 0.145 | 3.68 | 0.2 | 5.08 |
| 2 | 2.38 | 60.33 | 0.065 | 1.65 | 0.109 | 2.77 | 0.154 | 3.91 | 0.218 | 5.54 |
| 2 1/2 | 2.88 | 73.03 | 0.083 | 2.11 | 0.12 | 3.05 | 0.203 | 5.16 | 0.276 | 7.01 |
| 3 | 3.50 | 88.9 | 0.083 | 2.11 | 0.12 | 3.05 | 0.1216 | 5.49 | 0.3 | 7.62 |
| 3 1/2 | 4.00 | 101.6 | 0.083 | 2.11 | 0.12 | 3.05 | 0.226 | 5.74 | 0.318 | 8.08 |
| 4 | 4.50 | 114.3 | 0.083 | 2.11 | 0.12 | 3.05 | 0.237 | 6.02 | 0.337 | 8.56 |
| 5 | 5.56 | 141.3 | 0.10*9 | 2.77 | 0.134 | 3.4 | 0.258 | 6.55 | 0.375 | 9.52 |
| 6 | 6.63 | 168.28 | 0.10*9 | 2.77 | 0.134 | 3.4 | 0.28 | 7.11 | 0.432 | 10.97 |
| 8 | 8.63 | 219.08 | 0.109 | 2.77 | 0.148 | 3.76 | 0.322 | 8.18 | 0.5 | 12.7 |
| 10 | 10.75 | 273.05 | 0.134 | 3.4 | 0.165 | 4.19 | 0.365 | 9.27 | 0.5 | 12.7 |
| 12 | 12.75 | 323.85 | 0.156 | 3.96 | 0.18 | 4.57 | 0.375 | 9.52 | 0.5 | 12.7 |
| 14 | 14.00 | 355.6 | 0.156 | 3.96 | 0.188 | 4.78 | … | … | … | … |
| 16 | 16.00 | 406.4 | 0.165 | 4.19 | 0.188 | 4.78 | … | … | … | … |
| 18 | 18.00 | 457.2 | 0.165 | 4.19 | 0.188 | 4.78 | … | … | … | … |
| 20 | 20.00 | 508 | 0.188 | 4.78 | 0.188 | 4.78 | … | … | … | … |
| 22 | 22.00 | 558.8 | 0.188 | 4.78 | 0.218 | 5.54 | … | … | … | … |
| 24 | 24.00 | 609.6 | 0.218 | 5.54 | 0.25 | 6.35 | … | … | … | … |
| 30 | 30.00 | 762 | 0.25 | 6.35 | 0.312 | 7.92 | … | … | … | … |
Welded Pipe & Tube chemical composition
| A312 GRADES | UNS | C | Mn | P | S | Si | Cr | Ni | Mo | Ti | Nb | N |
| TP304 | S30400 | 0.08 | 2 | 0.045 | 0.03 | 1 | 18.0-20.0 | 8.0-11.0 | ||||
| TP304L | S30403 | 0.035 | 2 | 0.045 | 0.03 | 1 | 18.0-20.0 | 8.0-13.0 | ||||
| TP304H | S30409 | 0.04-0.10 | 2 | 0.045 | 0.03 | 1 | 18.0-20.0 | 8.0-11.0 | ||||
| TP304N | S30451 | 0.08 | 2 | 0.045 | 0.03 | 1 | 18.0-20.0 | 8.0-18.0 | 0.10-0.16 | |||
| TP304LN | S30453 | 0.035 | 2 | 0.045 | 0.03 | 1 | 18.0-20.0 | 8.0-12.0 | 0.10-0.16 | |||
| TP309S | S30908 | 0.08 | 2 | 0.045 | 0.03 | 1 | 22.0-24.0 | 12.0-15.0 | 0.75 | |||
| TP309H | S30909 | 0.04-0.10 | 2 | 0.045 | 0.03 | 1 | 22.0-24.0 | 12.0-15.0 | ||||
| TP309Cb | S30940 | 0.08 | 2 | 0.045 | 0.03 | 1 | 22.0-24.0 | 12.0-16.0 | 0.75 | 10xC min | ||
| 1.10 max | ||||||||||||
| TP309HCb | S30941 | 0.04-0.10 | 2 | 0.045 | 0.03 | 1 | 22.0-24.0 | 12.0-16.0 | 0.75 | 10xC min | ||
| 1.10 max | ||||||||||||
| TP310S | S3108 | 0.08 | 2 | 0.045 | 0.03 | 1 | 24.0-26.0 | 19.0-22.0 | 0.75 | |||
| TP310H | S3109 | 0.04-0.10 | 2 | 0.045 | 0.03 | 1 | 24.0-26.0 | 19.0-22.0 | ||||
| TP310Cb | S31040 | 0.08 | 2 | 0.045 | 0.03 | 1 | 24.0-26.0 | 19.0-22.0 | 0.75 | 10xC min | ||
| 1.10 max | ||||||||||||
| TP310HCb | S31041 | 0.04-0.10 | 2 | 0.045 | 0.03 | 1 | 24.0-26.0 | 19.0-22.0 | 0.75 | 10xC min | ||
| 1.10 max | ||||||||||||
| TP316 | S3160 | 0.08 | 2 | 0.045 | 0.03 | 1 | 16.0-18.0 | 11.0-14.0 | 2.0-3.0 | |||
| TP316L | S31603 | 0.035 | 2 | 0.045 | 0.03 | 1 | 16.0-18.0 | 10.0-14.0 | 2.0-3.0 | |||
| TP316H | S31609 | 0.04-0.10 | 2 | 0.045 | 0.03 | 1 | 16.0-18.0 | 11.0-14.0 | 2.0-3.0 | |||
| TP316Ti | S31635 | 0.08 | 2 | 0.045 | 0.03 | 0.75 | 16.0-18.0 | 10.0-14.0 | 2.0-3.0 | 5x | 0.1 | |
| (C-N) | ||||||||||||
| -0.7 | ||||||||||||
| TP316N | S31651 | 0.08 | 2 | 0.045 | 0.03 | 1 | 16.0-18.0 | 10.0-14.0 | 2.0-3.0 | 0.10-0.16 | ||
| TP316LN | S31653 | 0.035 | 2 | 0.045 | 0.03 | 1 | 16.0-18.0 | 11.0-14.0 | 2.0-3.0 | 0.10-0.16 | ||
| TP317 | S3170 | 0.08 | 2 | 0.045 | 0.03 | 1 | 18.0-20.0 | 10.0-14.0 | 3.0-4.0 | |||
| TP317L | S31703 | 0.035 | 2 | 0.045 | 0.03 | 1 | 18.0-20.0 | 11.0-15.0 | 3.0-4.0 | |||
| TP321 | S3210 | 0.08 | 2 | 0.045 | 0.03 | 1 | 17.0-19.0 | 9.0-12.0 | 0.1 | |||
| TP321H | S32109 | 0.04-0.10 | 2 | 0.045 | 0.03 | 1 | 17.0-19.0 | 9.0-12.0 | 0.1 | |||
| TP347 | S3470 | 0.08 | 2 | 0.045 | 0.03 | 1 | 17.0-19.0 | 9.0-13.0 | ||||
| TP347H | S34709 | 0.04-0.10 | 2 | 0.045 | 0.03 | 1 | 17.0-19.0 | 9.0-13.0 | ||||
| TP347LN | S34751 | 0.05-0.02 | 2 | 0.045 | 0.03 | 1 | 17.0-19.0 | 9.0-13.0 | 0.20- | 0.06-0.10 | ||
| 50 | ||||||||||||
| TP348 | S3480 | 0.08 | 2 | 0.045 | 0.03 | 1 | 17.0-19.0 | 9.0-13.0 | ||||
| TP348H | S34809 | 0.04-0.10 | 2 | 0.045 | 0.03 | 1 | 17.0-19.0 | 9.0-13.0 |
Welded Pipe & Tube Mechanical composition
| ASTM A312 Mechanical Properties | |||||
| Material | Heat | Temperure | Tensile Strength | Yield Strength | Elongation %, Min |
| Treatment | Min. | Ksi (MPa), Min. | Ksi (MPa), Min. | ||
| º F(º C) | |||||
| TP304 | Solution | 1900 (1040) | 75(515) | 30(205) | 35 |
| TP304L | Solution | 1900 (1040) | 70(485) | 25(170) | 35 |
| TP304H | Solution | 1900 (1040) | 75(515) | 30(205) | 35 |
| TP310S | Solution | 1900 (1040) | 75(515) | 30(205) | 35 |
| TP316 | Solution | 1900(1040) | 75(515) | 30(205) | 35 |
| TP316L | Solution | 1900(1040) | 70(485) | 25(170) | 35 |
| TP316H | Solution | 1900(1040) | 75(515) | 30(205) | 35 |
| TP316Ti | Solution | 1900(1040) | 75(515) | 30(205) | 35 |
| TP321 | Solution | 1900(1040) | 75(515) | 30(205) | 35 |
| TP321H | Solution | Cold: 2000(1100) | 75(515) | 30(205) | 35 |
| Hot: 1925(1050) | |||||
| TP347 | Solution | 1900(1040) | 75(515) | 30(205) | 35 |
| TP347H | Solution | Cold: 2000(1100) | 75(515) | 30(205) | |
| Hot: 1925(1050) | |||||