Zhangjiagang City Renhe High-Precision Control Pipe Co., Ltd is a professional manufacturer of precision seamless steel tube in China, our products include precision bright surface steel tube, high pressure oil tube, black phosphate tube and galvanized steel tube etc. our product range with outside diameter from 4mm to 90mm and wall thickness from 0.5mm to 10mm. Renhe occupies an area of 28, 000㎡and possesses fixed assets of RMB 15 million, more than 120 sets of equipment, and over 200 employees. And it has been approved by ISO9001 Quality System, in addition, we have advanced production equipments and testing equipments, such as eddy current testing machine, hydraulic test, metallographic test, mechanical properties testing machine and chemical composition analysis equipments. Our products can be widely used in the automobile industry , hydraulic cylinder system, construction machinery vehicles, high pressure oil supply system and heat exchanger, and so on. Bases on the principle of " Customer Satisfaction, Continuous Improvement", Zhangjiagang City Renhe High-Precision Control Pipe Co., Ltd sincerely wish to cooperate with domestic and overseas users with high quality products.</p>