Company annual sales of Chengdu Iron and Steel Group, Daye Steel Group, Baotou Steel, Baosteel Group, Anshan Iron and Steel Group, Tianjin big seamless, Xi Ningte steel, Wuxi steel, Hengyang Steel and other major steel production of seamless steel tubes and alloy tube. Main Material: 20 #, 35 #, 45 #, 20G, 20A, 40Mn2, 45Mn2, 27SiMn, 40MnB, 20MnVB, 20Cr, 30Cr, 35Cr, 40Cr, 45Cr, 50Cr, 38CrSi, 12CrMo, 20CrMo, 35CrMo, 42CrMo, 12CrMoV , execution of 12Cr1MoV, 38CrMoAL, 50CrV, 20CrMnSi, 30CrMnSi, PLATES, 20CrMnTi, 30CrMnTi, 12CrNi2, 12CrNi3, 12Cr2Ni4, 40CrNiMoA, 45CrNiMoVA, 20G, 20MnG, 25MnG, 12CrMoG, 15CrMoG, 12Cr2MoG, 12Cr1MoVG, 12Cr2MoWVTiB, 12Cr3MoVSiTiB and other standards: GB / T8162-2008 tube structure, the structure with GB/T14975-2002 the GB/T18984-2003 low temperature pipeline fluid with seamless steel pipe GB/T8163-2008 pipe stainless steel seamless pipe, stainless steel seamless pipe, GB/T14976-2002 fluid transport, GB3087-2008 low-pressure boiler tubes, GB5310-2008 high-pressure boiler pipe GB6479-2000 fertilizer dedicated pipe, YB528-65 oil drilling pipe GB3639-83 cold drawn or cold rolled precision seamless pipe, oil cracking pipe GB9948-2006, YB235 -70 geological drilling pipe GB3088-82 automobile axle casing.