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 capacityThe 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 purchase cost of ERW steel pipes is low, and the cost of UOE steel pipes is very high, and the general price difference is 15% -25%. There are fewer domestic manufacturers of UOE steel pipes, which makes procurement difficult. When the diameter is less than 406mm, the difference in purchasing costs is even greater. There are many manufacturers of ERW steel pipes and the procurement difficulty is low. When the diameter is less than 406mm, the purchase cost will be greatly reduced.