Cold drawn (rolled) seamless steel pipe production methods round tube → heating → perforation → Heading → annealing → pickling → oiled (copper) → multi-pass cold drawn (cold) → billet tube → heat treatment → straightening → hydrostatic testing (testing) → mark → storage Liaocheng Polygram Pipe Manufacturing Co., Ltd. mainly produces all kinds of materials such as steel: 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 Polygram and other Liaocheng Steel Pipe Manufacturing Co., Ltd. is located in Liaocheng Economic Development Zone, location, North Rinzai Handan Expressway, west of Beijing-Kowloon rail transport facilities. Shandong seamless steel pipe plant is a professional committed to the seamless pipe sales company, annual distribution Chengdu, Baosteel, Anshan, Tianjin, Ye Xining Steel and other major steel production of seamless pipe. Main products: steel pipe, seamless pipe, steel pipe, fluid pipe, structural steel and various high school low-pressure boiler tubes, fertilizer, petroleum cracking tubes, pipes and other structures. Standard: general structure seamless steel pipe: (GB / T8162-1999) transmission fluid with seamless steel pipe: (GB / T8163-1999) low-pressure boiler seamless steel pipe: (GB / T3087-1999) high-pressure boiler seamless steel pipe: (GB / T5310-1995) fertilizer seamless steel pipe: (GB / T6479-2000) petroleum cracking seamless steel pipe: (GB / T9948-1988) ship dedicated pipe: (GB / T5312-1998), etc. Over the years the sector Pipes, my company of "high quality and efficient Pipes, compliance heavy reputation" business philosophy to the new and old customers with quality products and services. With a good reputation and solid strength, quality products, low prices to new and old customers sincere cooperation, create great weekends and holidays. All the tubes are attached to a single or a copy of the original material, the agency acceptances. The company can be customized various non-standard special steel pipe! _ _ Pipes Pipes sector triangle shaped tubes are provided by Shandong Steel Pipe Manufacturing Co., Ltd. Liaocheng Polygram. Liaocheng in Shandong Steel Pipe Manufacturing Co. Polygram (www.lcbljgg.com) (www.lcbljgg.com) (www.sdlcblj.com) (www.bljggzz.com) strong, credible, Liaocheng in Shandong wire, pipe, plate manufacturing equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Polygram pipe into the brilliant and you work for a better future!