Tianjin, China Steel steel win-win Ltd. Major manufacturing and sales all kinds of seamless steel tube outer diameter of 8mm ~ 720mm, wall thickness of 1mm ~ 120mm, is with the Metallurgical Steel, Tianjin Steel Tube Company, Hengyang, Baoshan Iron and Steel, Steel, Gang, Xining Special Steel, Anshan Iron and Steel, S. Megga, Wuxi, Wuhan, Hongdu, such as domestic products, import business JAPAN JFE, NKK Germany, the United States, Spain, Russia and other materials for 10 #, 20 #, 45 #, 17SIMn, 16Mn (Q345BCDE), 20G, 12CrlMoVG, 12CrMo, T91, P91, T9, Cr5Mo (P5), 10CrMo910 (ST25 P22), 15CrMoG (P11 P22), WB36, 12-42CrMo, 20CrNIMo, 25Cr2MoV, 25-40CrMnMo, 35Mn2VNb, 34CrMo4, 20-40Cr, 38CrMoAI, 30-35CrMnSIA, 09CrMo, 13CrMo44, A53, SA106B, D40, N80, CrB, X42, 46, X52, X56, L245, L290, L360, 12Cr2MoWvTIB, J55, K55, L80, P110, 1Cr18N19T1, 0Cr18N19, 304,321,316,316 L, and so on.