About us Shanxi Zhongwei Flange Co., Ltd. was established in 2008, specializing in manufacturing forgings, mechanical processing, sales: flanges, forgings, pipe fittings, valves and valve accessories, elbows, steel, fasteners, hardware tools, small hardware. More than ten years of experience, serving the flange needs of hundreds of customers, professional craftsmanship and careful service, let more people choose us. Shanxi Zhongwei Flange Co., Ltd. warmly welcomes you to choose our products, so that you can rest assured.Customized ANSI ASME B16.5 Class 2500 raised welding neck flanges website:http://www.sxzwflange.com/