ERW welding round pipes also is called as Electric Resistance Welded Pipes.This type of steel pipes and tubes are widely used in various fields such as engineering purposes, fencing, scaffolding, line pipes and ERW steel pipes and tube are available in various quality, ຄວາມຫນາຂອງຝາ, ແລະເສັ້ນຜ່າກາງຂອງທໍ່ສໍາເລັດຮູບ.
