API 5L, ASTM A 53M, ASTM A 106M, Gr.B Seamless Carbon Steel pipe/A106 GR.B seamless steel pipe 2: Producing Type: Hot Rolled Steel pipe ,Cold Drawn Steel pipe ,Hot Expand Steel pipe ,Cold Rolled Steel pipe 3 Materail 1>ASTM A106GR B ,ASTM A106GRC , A53GRB ,ASTM A179,ASTM A192 API5LGR.B,API5LX42,API5LX52,API5LX60,API5LX65,API5LX70
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