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JIS G3445 Cold Drawn Carbon Seamless Steel Pipe
Hebei Shengtian Pipe-Fitting Group Co., Ltd.ASTM A312 SS304 Cold Rolled Stainless Seamless Steel Pipe
Hebei Shengtian Pipe-Fitting Group Co., Ltd.Sch40 A105 A106 Gr.B Carbon Seamless Steel Pipe
Hebei Shengtian Pipe-Fitting Group Co., Ltd.