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ERW Pipe Manufacturing Process - Carbon Steel Pipe and ... 2020-9-17u2002·u2002ERW Pipe Manufacturing Process. High-frequency straight seam resistance welded steel pipe, abbreviated as ERW, is a hot-rolled coil that is formed by a forming machine, and uses the skin effect and proximity effect of high-frequency current to heat and melt the edge of the tube blank, and press it under the action ...
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