... , 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 ... Q195, Q215, 15CrMo, 12CrMo, 16Mn,API 5L line pipe: Gr.A, Gr.B, X-42,X-46,X ... : They are mainly used for industries like machinery, automobile, shipping, chemical industry, heavy industry, steel structure, building, etc. steel pipe