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DN 1000 DN1600 CS Large Diameter Helical Welded Steel SSAW Pipe Length 18m/20m/24m/28m for Piling and Foundations Carbon Steel Pipe, Find Details and Price about Welded Steel Pipe Welded Pipe for Mine Fluid Sevice from DN 1000 DN1600 CS Large Diameter Helical Welded Steel SSAW Pipe Length 18m/20m/24m/28m for Piling and Foundations Carbon Steel Pipe - Liaocheng Mingxing Pipe Manufacturing Co., Ltd.