Changzhou Joyruns Steel Tube Co.,Ltd specializes in the export of steel pipes for 13 years.We has been a leading supplier of high-quality steel pipes of carbon, alloy, nickel material and copper, which is one of the most professional Bundy and stainless steel pipe manufacturers in China.Changzhou Joyruns steel tube Co.,ltd has advanced technology, equipment, management and good reputation, ensures that high-quality products and services are provided, the customer is satisfied. The company has implemented the effective quality assurance system, and the long-term planning, maintenance, control and improvement of the quality of the products.We uphold the "JOYUNS" brand "win-win cooperation and practical innovation"The product categories are as follows:Bundy tube: Single-wall copper tube, Single-wall galvanized tube, Double-wall copper pipe, Aluminum tube, Copper tubeCarbon steel pipe: A179 heat-exchanger tube, Boiler tube, Alloy tube, Automobile precision pipeStainless steel pipe: Austenitic stainless steel pipe, Duplex/Super Duplex stainless steel pipe, Nickel alloy steel pipe, Titanium steel pipe. All staff sincerely thank you for your concern and use of our products, and sincerely welcome your valuable comments on our products and services.