Wenzhou Shuangneng Valve Co., Ltd. was established in 2010, specializing in the production and manufacturing of stainless steel and special flanges and pipe fittings for nearly 20 years. Our main products include flanges, flanges, pipe plates, rubber joints, manholes, elbows, tees and other pipe fittings. we have ISO9001 certification CE、TS、Type test certificate, specializing in the production various standard such as national standard(HG), European standard(EN1092-1), American standard(ASME), Korean standard(KS), Japanese standard (JIS)and other standard flanges,capable of producing pressure vessel flanges, large-diameter flanges, non-standard flanges, marine flanges, etc. There are two large vertical lathes and over twenty CNC lathes in the factory, as well as a total of 40 equipment including conventional lathes, gantry machining centers, and CNC machining centers. Our factory specializes in producing various standard and non-standard flange and pipe fittings. Support diversified customized services, with a minimum order quantity of one piece. The flanges and pipefittings are mainly used in the fields of petroleum, industrial pipelines, industrial supporting facilities, shipyards, pharmaceuticals, etc. All products are of export quality and have deep cooperation with customers both domestically and internationally. All products have material guarantees, including spectral testing and strict quality inspection, ensuring that you can use them with confidence in various industries!