... treatment from rusting. Company ProfileLiaocheng Xinglong Seamless Pipe Manufacturing Co., Ltd is founded in 2004, covering an area of ... 5L in 2009.Production Equipment Liaocheng Xinglong Seamless Steel Tube Manufacturing Co, Ltd. has equipped 60, 90, 140 and 325 mill ... are widely used in petroleum, chemical industry, Electrical Power, Coal, Machinery, Low and high-pressure boiler, hydraulic prop and ...