| Customization: | Available |
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| Application: | Chemical Industry, Oil and Gas Industry, Chemical Industry, Oil and Gas Industry, Chemical Industry, Oil and Gas Industry |
| Certification: | ISO9001, ISO9001, ISO9001 |
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Stainless Steel Welded Pipe, 304 Welded Pipe, Stainless Steel ERW Pipe, ERW Stainless Steel Pipe, SS 304 ERW Pipe, EFW Stainless Steel Pipe, Welded Stainless Steel Pipe 316L, Stainless Steel Welded Pipe Manufacturers, SS ERW Pipe Manufacturer, Welding SCH 10 Stainless Pipe
A stainless steel welded pipe is a steel pipe made of a plate or steel strip after crimping and welding. SS welded pipe has a simple production process, high production efficiency, many varieties and specifications, and less equipment investment. The advantage is low cost, but its general strength is lower than that of seamless steel pipe. Common stainless pipe welding includes electric resistance welding (ERW), electric-fusion welding (EFW), submerged arc welding (SAW), longitudinal submerged arc welding Longitude (SAWL), and transverse submerged arc welding SAWH.
Stainless Steel Welded Pipe Specifications
| Pipe Specifications |
ASTM A312 / ASME SA 312 ASTM A269 / ASME SA 213 ASTM B676 / ASME SB676 |
| Grade | TP304,TP304L,TP316,TP316L,316Ti TP317,TP317L,TP321,TP310S,TP347,S31254,N08367,N08926,N08904 |
| Pipe Standard | DIN, JIS, ASTM, EN, GB, AISI, ASME |
| Pipe Thickness | 0.3mm - 50 mm |
| Welded Pipe size | 5.0 mm - 1219.2 mm |
| Pipe Schedule | SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS |
| Pipe & Tube End | Plain End, Beveled End, Treaded Pipe. |
We are stainless steel welded pipe in compliance with ASTM A312, ASME SA312, ASTM A269, ASME SA269, ASTM B676, and ASME SB676 standards. Including various grades TP304, TP304L, TP310S, TP316, TP316L, 316Ti, TP317, TP317L, TP321, TP347, TP347H, N08367, N08926, N08904, S31254. Our stainless steel welded pipes comply with national and international material standards, and the quality and performance are guaranteed.
Application SS Welded Pipe
SS welded pipe is usually a large diameter pipe, and the production size standard of Pipe complies with ASME B36.19. Stainless steel ERW pipes are generally large-diameter pipes and are widely used. They are mainly used for low-pressure fluid pipes and a large number of pipes for transporting fluids, such as water, gas, natural gas, oil, boilers, mechanical parts, and sewage pipes.
Chemical Composition of Stainless Steel Welded Pipe
| Grade | UNS | C≤ | Mn | P≤ | S≤ | Si≤ | Cr | Mo | Ni | Cu |
| 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 | - |
| TP316 | S31600 | 0.08 | 2 | 0.045 | 0.03 | 1 | 16.0-18.0 | 2.00-3.00 | 10.0-14.0 | - |
| TP316L | S31603 | 0.035 | 2 | 0.045 | 0.03 | 1 | 16.0-18.0 | 2.00-3.00 | 11.0-14.0 | - |
| 316Ti | S31635 | 0.08 | 2 | 0.045 | 0.03 | 0.75 | 16.0-18.0 | 2.00-3.00 | 10.0-12.0 | - |
| TP317 | S31700 | 0.08 | 2 | 0.045 | 0.03 | 1 | 18.0-20.0 | 3.0-4.0 | 11.0-14.0 | - |
| TP317L | S31703 | 0.035 | 2 | 0.045 | 0.03 | 1 | 18.0-20.0 | 3.0-4.0 | 11.0-15.0 | - |
| TP321 | S32100 | 0.08 | 2 | 0.045 | 0.03 | 1 | 17.0-19.0 | - | 9.0-12.0 | - |
| 321H | S32109 | 0.04-0.1 | 2 | 0.045 | 0.03 | 1 | 17.0-19.0 | - | 9.0-12.0 | - |
| 310 | S31000 | 0.25 | 2 | 0.045 | 0.03 | 1.5 | 24.0-26.0 | 0.75 | 19.0-22.0 | - |
| TP310S | S31008 | 0.08 | 2 | 0.045 | 0.03 | 1 | 24.0-26.0 | 0.75 | 19.0-22.0 | - |
| TP347 | S34700 | 0.08 | 2 | 0.045 | 0.03 | 1 | 17.0-19.0 | - | 9.0-13.0 | - |
| 254SMO | S31254 | 0.02 | 1 | 0.03 | 0.01 | 0.8 | 19.5-20.5 | 6.0-6.5 | 17.5-18.5 | 0.5-1.0 |
| AL-6XN | N08367 | 0.03 | 2 | 0.04 | 0.03 | 1 | 20.0-22.0 | 6.0-7.0 | 23.5-25.5 | 0.75 |
| F904L | N08904 | 0.02 | 2 | 0.04 | 0.03 | 1 | 19.0-23.0 | 4.0-5.0 | 23.0-28.0 | 1.0-2.0 |
Stainless Steel Welded Pipe Mechanical Properties
| Mechanical properties | Tensile, min, ksi[MPa] | Yield, min, ksi[MPa] | Elongation, %(min) | Hardness, HB(max) |
| TP304 | 75[515] | 30[205] | 35 | 192 |
| TP304L | 70[485] | 25[170] | 35 | 192 |
| TP316 | 75[515] | 30[205] | 35 | 192 |
| TP316L | 70[485] | 25[170] | 35 | 192 |
| 316Ti | 75[515] | 30[205] | 35 | 192 |
| TP317 | 75[515] | 30[205] | 35 | 192 |
| TP317L | 75[515] | 30[205] | 35 | 192 |
| TP321 | 75[515] | 30[205] | 35 | 192 |
| 321H | 75[515] | 30[205] | 35 | 192 |
| TP310 | 75[515] | 30[205] | 35 | 192 |
| TP310S | 75[515] | 30[205] | 35 | 192 |
| TP347 | 75[515] | 30[205] | 35 | 192 |
| S31254 | 98[675] | 43[310] | 35 | 220 |
| N08367 | 100[690] | 45[310] | 30 | 241 |
| N08926 | 94[650] | 43[295] | 35 | 256 |
| N08904 | 71[490] | 31[215] | 35 | 192 |
Stainless Steel Welded Pipe Production Process
The typical production process of SS welded pipe: Raw material decoiling-flattening-end shearing and welding-loop-forming-welding-removal of inner and outer welding beads-pre-calibration-heat treatment-sizing and alignment-eddy current testing-cutting-hydraulic pressure inspection-pickling-final inspection-packing-shipment.
The raw materials of spiral steel pipe are steel coil, welding wire, and flux. Before forming, the strip steel is leveled, trimmed, planed, surface cleaned, transported, and pre-bent. The weld gap control device is used to ensure that the weld gap meets the welding requirements and that the pipe diameter, misalignment, and weld gap are strictly controlled. After cutting into single steel pipes, the first three steel pipes of each batch must undergo a strict first inspection system to check the mechanical properties, chemical composition, and fusion status of the welds. After the surface quality of the steel pipe and the non-destructive flaw detection are checked to ensure that the pipe-making process is qualified, it will be officially put into production.
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