Api 5l Hsaw Pipe
API 5L large-diameter SAW welded pipe produced on advanced mill lines (including UOE forming and longitudinal submerged arc welded production) with options for mechanical or hydrostatic expansion to improve dimensional accuracy and reduce residual stress. Supplied in specified OD/wall ranges, lengths, and grade ranges up to high-strength API 5L and GB/T 9711 levels, with full inspection capability and multi-standard compliance as listed.
Mill / Manufacturing Process
- UOE mill with advanced technology and process, high production efficiency, and stable product quality.
- Complete inspection equipment (as stated).
- UOE mill adopts U & O forming.
- Internal welding: five internal welding stations with three wires (as stated).
- External welding: four external welding stations with three wires (as stated).
Expansion / Dimensional Control
- Welded pipe can be expanded by mechanical or hydrostatic expander (per customer requirements).
- Expansion is stated to improve dimensional accuracy and eliminate residual stress.
Specifications (UOE Line)
| Outside Diameter | 508 mm – 1118 mm (20" – 44") |
|---|---|
| Wall Thickness | 6.0 – 25.4 mm (1/4" – 1") |
| Quality Standards | API, DNV, ISO, DEP, EN, ASTM, DIN, BS, JIS, GB, CSA |
| Length | 9 – 12.3 m (30' – 40') |
| Grades | API 5L A – X90; GB/T 9711 L190 – L625 |
Large Diameter Longitudinal SAWL Production Line
- Large diameter longitudinal submerged arc welded (SAWL) pipe production line in China (as stated).
- Progressive bending process (as stated).
- Features referenced: evenly distributed forming stress, high uniformity of dimension, wide product range, and high flexibility.
Specifications (SAWL Progressive Bending Line)
| Outside Diameter | Φ406 mm – 1626 mm (16" – 64") |
|---|---|
| Wall Thickness | 6.0 – 75 mm (1/4" – 3") |
| Quality Standards | API, DNV, ISO, DEP, EN, ASTM, DIN, BS, JIS, GB, CSA |
| Length | 3 – 12.5 m (10' – 41') |
| Grades | API 5L A – X100; GB/T 9711 L190 – L690 |