... 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 ... :Q235, Q345, Q195, Q215, 15CrMo, 12CrMo, 16Mn,API 5L line pipe: Gr.A, Gr.B, X-42,X-46,X-52 ... , shipping, chemical industry, heavy industry, steel structure, building, etc. steel pipe