How we define the features of ERW pipe

The wall thickness of ERW pipe is uniform and wall thickness deviation can be neglected. To ensure the least wall thickness meets the standard requirements and function, the only way is to increase wall thickness.

High-frequency resistance welding pipes (Electric Resistance Welding, referred to as ERW) and seamless steel pipe ERW have the biggest difference is that of weld, which is the key to the quality of ERW steel pipes.

The use of this method to eliminate stress is softened and refine, and improve the weld heat affected zone mechanical properties purposes. Seamless Physical refers to the internal hot dipped galvanized pipe with the parent material differences between the results of welding on the mechanical properties decrease. Geometric Seamless ERW steel pipe is to remove all internal and external burrs.
For customers, ERW steel pipe can save 5%～10% purchasing cost. Taking 9-5/8’’×8.94mm casing as an example, it can save 26.8-53.6 tons raw material for ten thousand meters, equivalently 300 thousand RMB.