All high alloy steel company sells are from large domestic steel mills 15crmo manufacturers, including Shanghai Baosteel, Valin Steel, Hubei Steel, Shandong Lu Po, Anshan, Chengdu, Tianjin and other major steel mills. Standing alloy pipe materials including: 15CrMo, 12Cr1MoV, 16Mn, 37Mn5,12Cr2Mo, 35CrMo, 42CrMo, 27SiMn, 10CrMo910, Cr5Mo, Cr9Mo, 1Cr5Mo, T91, Steel Research 102,40Cr, P22 and so on. Alloy seamless steel tubes are operated by the State of enforcement Standards: GB8162-2008 (structural pipe), GB8163-2008 (fluid pipe), GB3087-2008 (low and medium pressure boiler tubes), GB5310-2008 (high-pressure boiler tubes), GB6479- 2000 (fertilizer tube), GB9948-2006 (petroleum cracking tube) and so on. Main Material: 20 #, 35 #, 45 #, 20G, 20A, 40Mn2,45Mn2,27SiMn, 40MnB, 20MnVB, 20Cr, 30Cr, 35Cr, 40Cr, 45Cr, 50Cr, 38CrSi, 12CrMo, 20CrMo, 35CrMo, 42CrMo, 12CrMoV , 12Cr1MoV, 38CrMoAL, 50CrV, 20CrMnSi, 30CrMnSi, 35CrMnSi, 20CrMnTi, 30CrMnTi, 12CrNi2, 12CrNi3,12Cr2Ni4,40CrNiMoA, 45CrNiMoVA, 20G, 20MnG, 25MnG, 12CrMoG, 15CrMoG, 12Cr2MoG, 12Cr1MoVG, 12Cr2MoWVTiB, 12Cr3MoVSiTiB such as Baosteel seamless 15crmo 15crmo tube, Katherine source steel (certified), Shaoyang 15crmo provided by source Pipe Co., Ltd. Liaocheng trillion. Liaocheng Katherine source Pipe Co., Ltd. (www.lczygg.com) Shandong Liaocheng, steel leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Katherine source leader in steel with the staff warmly welcome all inquiries negotiations to create Katherine source steel a better future.