Longitudinally welded large-diameter electric-welded steel pipe 530 mm with an 8 mm wall, manufactured to GOST 20295-85 from low-alloy steel of strength class K52-K60. Used in the construction of main oil and gas pipelines as well as high-pressure field pipelines. Supplied with a factory three-layer anti-corrosion polyethylene coating and, by agreement, an internal smoothing coating. Cut lengths 11-12 m, ends bevelled for welding.
Technical specifications
| Standard | 20295-85 |
| Diameter (mm) | 530 |
| Wall thickness (mm) | 8 |
| Steel grade | Strength class K52-K60 |
| Length (m) | 11-12 |
| Coating | 3-layer polyethylene anti-corrosion |