Hebei Gongyuan Pipe Manufacture Co., Ltd. is located in the industrial zone, Yanshan County, Cangzhou, Hebei, specializing in producing carbon steel pipe.We establish an effective complete quality control and assurance system. In 2008, our company obtained the certificate of ISO 9001 Quality System Authentification.We are equipped with sophisticated manufacturing and testing equipments, and a complete testing system has established, which includes advanced testing equipments such as X-ray detector, ultrasonic wave detector, hydrostatic tester, tension tester and metallurgical analyzer . Such...