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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 production management, fluid, high-pressure boiler tubes, low pressure boiler tubes, seamless steel pipe, seamless pipe, fertilizer, petroleum cracking pipe, oil casing, alloy tubes. 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-
