The company's main
: Cheng Gang, Bao Steel, Anshan, Baotou, smelting steel, Tianjin, Cheng Gang, Xining Special Steel, Anshan Steel, Chengde, Wuxi, Wuhan, Honduras, and so the structure of several major steel tube production , fluid management, high-pressure boiler tubes, low pressure boiler tubes, seamless steel pipe, seamless pipe, fertilizer, petroleum cracking pipe, oil pipe, alloy pipe. Materials are 10 # , 20 # , 35 # , 45 # , 20G, 16Mn, P22, P23 , P91, T91, Cr5Mo, 42CrMo, 30CrMO, 12Cr1MoV, 15CrMoG, 27SiMn, 40Cr, 15CrMo, 35CrMo, 42CrMo, 12CrMov, 10CrMo910 and so on. http: / / www.sjjk1688.cn.alibaba.com main implementation criteria : 10 # , 20 # , 35 # , 45 # , 20G, GB5310-95, St45.8-