What is the difference between erw and seamless pipes

The strength of the material is equivalent to the strength of the pipes for the drawn seamless pipes. The erw pipes are welded from a sheet, plate or coil to make the pipes. The welded joint is the weakest part of the pipe and it determines the overall strength of the pipe. Even though the material has a higher strength value, the welded joint limits the strength to the strength of the welded point.

This is one of the reasons why seamless pipes are used in precision applications with high strength requirements. The oil and gas sectors cannot afford to have a leakage or break in the middle of the operation.

The consequence would be costlier and disastrous. The pipes need to have consistent strength allover and need to have high precision for better connections as well. The erw pipes do have higher absolute roughness, meaning the wall thickness of the pipes are not as uniform as in the seamless pipes and the edges of the pipes are not as fine as in the seamless pipes.

The erw and seamless pipe difference will continue to cause debates amongst experts and people in the piping world. If you want to get the best deal on these pipes, we are a one-stop destination for all your requirements. If you have any queries or, want to know more about, our pipe erw or our other products contact us or visit our factory. All Carbon steel pipe such as Casing pipe and Tubing pipe made to API specifications uses seamless or electric-weld supplying processes.

The main Difference is that the Seamless Piping is suppliers by hot-working steel or, if necessary, by subsequently cold-finishing the hot-worked product to produce the desired shape, dimensions, and properties.

Such differences of erw are usually eliminated if the electric-weld tubing is heat-treated by the quenched-and-tempered process, which is mandatory for API grades L80, C90, T95, and P Electric-welded pipe has one longitudinal seam formed by electric-induction or electric-resistance welding without the addition of filler metal.

The edges to be weld seam are pressed together mechanically, and the heat for welding is generated by the resistance to flow of electric current. In both methods seamless and erw, raw material is first cast into ingots. It is then made into a pipe by forcing the edges together and sealing them with a weld or stretching the steel out into a seamless tube.

While the apparent advantage is clear, a critique of seamless piping is that the stretching and rolling process produces an inconsistent wall thickness compared to the more precise thickness of steel sheets destined for welding. The pipe is formed by the seam of the tube and moving the cut coil through a series of rollers is then welded in a chemically neutral environment.

In a welded pipe, the seam or the weld-joint is the weaker part of the pipe limiting the strength of the pipe to the strength of the weld-joint. Generally, the process of supplying weld pipe begins with the rolling of a steel coil to the desired gauge thickness to form a flat strip.

Intuitively this concept is easily accepted by purchasers and designers with limited experience with the various products. Each product form and manufacturing method has its own inherent problems and potential defects.

Consumers must become familiar with what those problems and defects are, and how they might affect particular applications. Then they can make an informed decision based on facts, rather than myth. We manufacture ERW steel pipes in various dimentions and shapes. We are also one of the largest Stainless Steel pipes exporter from India, our manufacturing unit is situated at Rajkot, Gujarat India. Our Stainless Steel manufacturing unit is capable of producing large and customized order from our client around the world.

Stainless steel pipe supplier from Gujarat. Stainless Steel pipe exporter from India.