What is an ERW tube?"ERW tube" is straight seam Resistance Welding pipe, or Electric Resistance Welding, abbreviated as ERW, used for transporting oil, natural gas, and other vapor liquid substances. It can fulfill varied high and low pressure requirements and plays a crucial role in the world's tra
Raw material uncoiling-leveling-end cutting and welding-looper-forming-welding-internal and external weld bead removal-pre-correction-induction heat treatment-sizing and straightening-eddy current testing-cutting-water pressure inspection-pickling-final inspection (Strictly check)-packaging-shipping
