Cangzhou Spiral Steel Pipe Co., ltd, which is a joint-stock corporation established in 1994. It occupies 420, 000 square meters with total assets of 4530 million RMB yuan. There are 480 employees and its annual output is 200, 000 tons of spiral steel pipe and the output value is 54 million every year. The company has five production lines now. The product is spiral double-faced submerged-arc welded pipes. Now the diameter of our product is from 219mm to 3000mm and wall thickness is from 5mm to 28mm. Our product comply with the standard of SY/ T5037-2000, GB/ T9711.1-1997 and API 5L, the material can be Q235A, B, 16Manganese and X42-X70 grade plate. The products are widely used in the long-distance transmitting pipelines of natural gas, petroleum, chemical industry, power, heat power and water source etc Our product is strictly tested in all process from contract signing, raw material purchasing, producing, and inspection and after sale service, and we passed through ISO9001 Quality System Certification in 2000, passed the API 5L Qualification of American Petroleum Institute in 2006. Our goods pass the third party inspection such as GL, SGS etc. Our goods has export to so many countries such as Portugal, Argentina, USA, Canada, Iran, UAE, South Africa, France, etc. We ensure to supply good product and service for all our customer.