sona castings
ERW Pipes
In House Material (HR Coil) Of ISI Standards | Cold-Saw (End-Faced) Pipes ERW Pipes are extensively used in agriculture, industry and construction activities like scaffolding and casing in bore wells. These are used for conveying water, gas, crude oil and chemicals at various pressures and densities over long distances. The process of manufacturing ERW GP pipes and tubes involves working with flat steel sheets and turning them into cylindrical form. Then the two edges of the coil are welded together using pressure and heat generated by induction or by an electric current through the seam.he seam differentiates ERW pipes from seamless pipes.The quality assurance department is fully backed by modern laboratory for various metallurgical and chemical tests, and test hours for testing physical properties.
Benefits of ERW GP Pipes and Tubes
- Since the only part that needs to be welded is the seam, the rest of the pipe is clean. The post-welding usually only involves cleaning, grinding and trimming of the pipe or tube ends which have been welded.
- ERW pipes have an advantage over seamless pipes in terms of accuracy of dimensions owing to higher strip rolling accuracy and pipe material control. ERW pipes and tubes have a high level of impact toughness.
- Pre-galvanized ERW pipes have strong rust and corrosion-resistant properties.
- The microstructure of the pipes and tubes is uniform as they have been developed from steel sheets of uniform thickness.
Specification
| IS 3601 (Round) | IS 4923 (Square & Rectangle) | Pipe Weight (KG) |
|---|---|---|
| 31 OD | 1" | 7,8,10 |
| 41 OD | 1.25" | 9,12,14,17 |
| 48 OD | 1.5" | 9,12,14,20 |
| 58 OD | 2" | 12,15,20 |
| 76 OD | 2.5" | 17,20,25 |
| 88 OD | 3" | 25,30,35 |