The difference between ERW and UOE steel tubes
The difference between ERW straight seam resistance welded steel pipe and LSAW straight seam submerged arc welded (UOE) steel pipe: 1. The difference between raw materials and production capacity The raw material of ERW steel pipe is hot rolled steel coil, and the raw material of UOE steel pipe is hot rolled steel plate. Therefore, ERW steel pipe can realize continuous pipeline operation, high production efficiency and low production cost; while UOE steel pipe is processed by steel plate, continuous pipeline operation cannot be realized, production efficiency is low, and production cost is high. The ERW steel pipe is limited by the thickness of the coil. Generally, the maximum thickness that can be produced is 25mm, and the maximum caliber that can be produced is 660mm. The maximum thickness that UOE steel pipe can be produced is 40mm. The maximum production diameter is 1422mm. 2. Welding difference No welding wire is required for ERW steel pipes; welding wire is ...