Spiral Steel Pipe (SSAW)
Spiral submerged arc welded (SSAW) pipe is formed from steel coil into a spiral seam, suitable for large-diameter, long-distance transmission. Youcheng supplies PSL1/PSL2 grades for municipal water, city gas (up to 1.6 MPa) and piling.
Key Specifications
| Item | Range |
|---|---|
| Outer Diameter | 219 mm – 3620 mm (8″ – 142″) |
| Wall Thickness | 6 mm – 25.4 mm |
| Length | 6 / 9 / 12 m (custom) |
| Material | Q235B, Q355B, L245, L290, L360 (up to X70 / PSL2) |
| Standard | SY/T 5037, GB/T 9711 (PSL1/PSL2), API 5L |
| Surface | Black paint, 3PE, FBE, epoxy coal tar |
PSL1 vs PSL2
PSL2 offers stricter chemical, toughness and non-destructive testing requirements — recommended for pressurized city gas and critical transmission lines. We help buyers select the right level based on design pressure and service conditions.
Applications
- Water transmission & diversion
- City gas pipelines (up to 1.6 MPa)
- Foundation piling & structural
Related: 3PE coated pipe · TPEP coated pipe