Zhejiang Guanyu Steel Tube Manufacturing Co.,Ltd is located in the famous business city of Wenzhou in 1994, possessing registered capital more than 10million RMB. After over 10 years&＃39; efforts,the company has become a comprehensive manufacturer which is integrated with production ,market and research. The management of the company and its employees shall work continously and collectively to go further. 　　In order to ensure the quality of the products,we imported many advanced equipments from Germany,such as AOD concise stoves,650rolling mills, different types perforations,cold-drawn machines production lines,cold-drawn production pipelines,Mechanics test,Ultrasonic test,Eddy current test,Hydro test,spectrum instrumnent and other related physics and chemistry equipments.All our products are authenticated by ISO9001:2000　　The main materials are 304,304L,321,316,316L,317,310s and so on.The specification of stainless steel seamless pipe is (6-580)x(1-30)x(3000-12000)mm.We can also supply the specification and material under the negotiation with our clients.The products widely used in petroleum,chemical industry,chemical fiber,medical machinery, smelting,aerospace,papermaking,foodstuff,shipbuilding,auto,environment-protection,boiler,heat-exchanger ,pressure containers,water resources and electricity industry etc. 　　Executed standard of products: ASTMA269/ ASTMA312 / ASTMA511/ ASTMA213/A213M/ ASTMA312/A31 JIS3446/ JIS3448/ JIS3459/ JIS3463/DIN2462/GB/T14975-2002 GB/T14976-2002　　All the customers from home and abroad are welcome to communicate and cooperate with our company.We shall provide you with steel pipes in high technical content,most competitive price,solid strength,scientific management and other preferable terms and conditions.