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.