Permanent Steel Manufacturing Co., Ltd has been committed to being a major supplier of quality kinds of hollow section, galvanized tube, stainless steel pipe, numerous types of piping equipments including Bend, Cap, Coupling, Elbow, Reducer, Stub End, Tee, Olet, Joint, Gasket, etc. As a factory, which specializing in the production, processing and sales of various steel pipes and pipe fittings size enterprises, headquartered in Hunan, the production base is located in Shandong and Tianjin. so far, the facility occupies more than 228,000 square feet under roof and includes two working mills and quality assurance chemical- and strength-testing laboratories on site and located on a 2,000-acre site with more than 60 acres under roof, is home to one of the world' s largest cupolas; and the Contiarc, the first-of-its-kind continuous arc furnace. Our company has imported the advanced productive equipment and the inspection equipment, we will do the UT testing, RT testing on line, and the Hydrostatic testing during the production.