Zhangjiagang Shagang Jinzhou Steel Pipe Co., Ltd has a JCOE process large diameter LSAW pipe production line. JCOE adopts the process of asymptotic bending forming, so stress can be even distributed and pipe shape kept well; the treatment of pre-welding +finished-welding can guarantee the good welded seam quality; the straight welded seam can be made nondestructive inspection conveniently; the expanded diameter treatment to pipe can minimize and even distribute inner stress，it can prevent the stress corrosion crack and keep size in high precision; Since various specifications they can produce, nearly all the size within the scope can be made, not only the small diameter thick walls also the big ones.
Since put into production, it has supplied the prime pipes to many clients globally, such as USA, Chili, Venezuela state oil and natural gas companies, Sinopec Project on the Natural Gas Transmission from Sichuan to East China, PetroChina Project on Crude Oil Transmission Piping between China and Kazakhstan, Central Asia Natural Gas Piping, Chad Piping Project the second phase, Weizhou Natural Gas piping Project the second phase, Shanxi Jingbian to Xi’an Natural Gas Project the third phase, Jinzhou to Zhengzhou Petroleum Pipe Line Project, Zhenhai Petrochemical Project, Fujian Xianglu Petrochemical Project, Dalian Hengli Petrochemical Project, Steel Structure of Tianjin Train Station, Russian Bridge Project and so on.

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