we, Hebei Gee Pipe Mill Co., Ltd,are specialized various steel pipe ,including seamless pipe ,carbon pipe,and stainless pipe. Name: weld steel pipeDN:15-1220Thickness:3.5-59.5mmLength:6000mm-12000mmStandard:ASTMA53,API5LGR.B,EN1025,API5L,API5CT,APISPEC5L ,GB/T9711.1-1997,GB/T5037-2001,GB/T5040 etc.Material:Q235, Q345, Q195, Q215, 15CrMo, 12CrMo, 16Mn,API 5L line pipe: Gr.A, Gr.B, X-42,X-46,X-52,X ...