Guanyu Tube has been serving the World since 2003. ISO 9001:2015, PED 2014/68/EU certified. Zhejiang Guanyu Steel Tube Co., Ltd is a specialized manufacturer of High Quality Stainless Steel Tubes & Pipe, Nickel Alloy Tubing & Pipe in China. Production area covers an area of 35,000 square meters. Annual output capacity more than 10,000 metric tons. We have built a complete quality management system and organization according to ISO 9001:2015 and PED 2014/68/EU. Quality control begins with an audit trail and continues from the point of steel melting. for the raw materials, we select the best quality raw material for our customers. right through to the finished product. This level of attention to detail extends throughout the design and manufacturing chain, all kinds of inspection will be all though the producing process ensure the Stainless Steel Tubes/Tubing/Pipe and Nickel Alloy Tubes/Tubing/Pipe finished in qualification. With destructive and non-destructive tests according to standard specification and customer’s special requirement, and including verification of performance by independent third-party test houses. Thanks to all of our clients, your trust drives us to overcome millions of difficulties and achieve today’s success!