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Development History
    1、We established our mill in 1994 with the name Cangzhou Spiral Steel Pipes Mill.
    2、In 1998,we build the first double face submerge arc welding unit, and start making pipe on September 18th,1999.
    3、In 2000,Cangzhou Spiral Steel Pipes Mill changed his name into Cangzhou Spiral Steel Pipe Co.,Ltd., reformed into joint-equity enterprise.
    4、In 2002,we built Φ219mm to Φ630mm double face submerge arc welding unit in workshop Ⅱ and start to making pipe.
    5、In July, 2002,We established Cangzhou Shenzhou Plastic Pipe Co.,Ltd.
    6、In 2004,Φ219mm to Φ529mm double face submerge arc welding unit start making pipe in workshop.
    7、In 2005, we took technical transformation on our high-frequency welding production line.
    8、In 2007,the thick wall thickness double face submerge arc welding unit go into operation.
    9、In 2009, our big diameter, thick wall thickness double face submerge arc welding unit go into operation in workshop Ⅲ, which can produce Φ509mm to Φ3500mm, wall thickness 25 mm steel pipes.
    10、In June, 2010,We established Cangzhou Derry Fengda International Trade Co., Ltd.
    11、At the end of Auguest,2010,the first production unit of Cangzhou Double Dragon Steel Pipe Co., Ltd. ,workshopⅠstart installation and run; and start making pipe from September. The second production line finished installation and run at the end of December.
    12、In October, 2010,We established Cangzhou Spiral Steel Pipe Co., Ltd Laiwu Branch.
    13、In December, 2010,the 3PE coating production line of Cangzhou OK Anticorrosion & Thermal Insulation Project Co.,LTD go into production.
    14、In May, 2011,all the equipments in fly welding workshop of Cangzhou Double Dragon Steel Pipe Co., Ltd. started to installation and run.
    15、At the end of December, 2012, we joint capital to build Inner Mongolia Zhengyuan Steel Pipe Manufacturing Co., Ltd.
    16、In October, Cangzhou Spiral Steel Pipe Co., Ltd. is registered as Cangzhou Spiral Steel Pipe Group Co., Ltd which became a group ompany has five subsidiaries.
 
 
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