Cangzhou City Huahao Pipe Limited areas of north China specializing in the production of steel pipes one of the large enterprises. The company in 2002 passed the ISO 9001 quality management system certification. Expansion of the company has two production lines. The company specializes in dealing with international trade business customers, mainly a series of seamless steel pipe production and sale of thermal expansion pipe series, Nazarbayev Heat Pipe Series, a series of ERW pipe, spiral pipe and casing series of steel tubes, all kinds of thick-walled seamless steel tubes, thick-walled pipe welding various series, product implementation GB, the United States superscript_, subscript_, and other German national standards for the material. Products sold throughout more than 2,000 outlets, and the Southeast Asian exports ....