At Shijiazhuang Duwa Piping Co.,Ltd, you will find an extensive range of Flanges, Blind Flange,Slip on Flange,Lap joint Flange,Pipe Fittings, Pipe, Valves, Fasteners, Gaskets and other spare parts for industrial use - more than 50 product types available in over 400 sizes and 20 materials. Why Choose DUWA: Short delivery: 3days Ex-works Quality Guarantee period is 3rd times than others Whole-package piping material supplier 0 quality complaint in 5 years, export to 123 countries and districts, 1000 overseas projects.