We are the biggest steel tube stockist in china and a professional oil&gas pipeline project supplier. In recent years, as qualified suppliers of Sinopec、Petro china and Indian Oil 、PDVSA、Petroleo Brasileiro S.A, HAITAI has participated in many oil&gas pipeline projects. HaiTai is the top agent of first-class manufacturers such as BAOSTEEL,CSST,TPCO,Hengyang Valin. While we have about 30000 M.Tons stock with a 50,000 M2 indoor warehouse. We also built two mills for the carbon and stainless pipe producing in Shanghai and Yantai,the OD size is from 0.5inch-20inch for seamless, and 6inch-80inch for welded. Please be sure that Haitai and me will offer you Best Price+ Fast Action +Professional technical advice. If any further demands related to Carbon / Alloy /Stainless pipes and tubes, especially ERW&SAW pipes, you can contact me directly and I'm looking forward to more cooperation.