???SHENGYANG STEEL PIPE??? is made up of these there companies: Shanghai Shengyang Fluid Equipment Co., Ltd (trade company), Wenzhou Longwan Nanyang Steel Pipes Factory ( manufacture company which was built in 1997), and Zhejiang Shengyang Stainless Steel Manufacture Co., Ltd (new manufacture company).We have got the ISO 9001 certificate, and the European PED certificate is under transaction. Our company is continuously expanding ourselves for building two new standard workshop in 2008 already, and we on a request of improving our quality continuously. And our testing department check every aspect of improving our vigorously. It is our obligation to operate the quality assurance syatem to meet the international standard to ensure that the consistent control is established, implemented and maintained.