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ERW/ERW (Electric Resistance Welded) Steel Pipe, ERW Carbon Steel Pipe/API 5L Psl1/Psl2 Gr. a, Gr. B, X42, X46, X52, X56, X60, X65, X70/Pls1/Pls2, Find Details and Price about Pipe Steel from ERW/ERW (Electric Resistance Welded) Steel Pipe, ERW Carbon Steel Pipe/API 5L Psl1/Psl2 Gr. a, Gr. B, X42, X46, X52, X56, X60, X65, X70/Pls1/Pls2 - Chief Steel (Shanghai) Trading Co., Ltd.