All flanges that “De Yu” manufactured are according to international standards such as DIN(Germany Standard), ANSI(USA Standard), JIS(Japan Standard) & all materials used are 304(L), 361(L).

To reduce production cost and benefit customers, all products are consistently manufactured from molding development, casting procedures and extra-work procedures.  To confide in customers, we strictly control quality during producing procedures to ensure quality assurance.

To meet the market trend and create unique products, our core products use the parts of paper machine, food machines and chemical machine.  We also can use the materials according to customers' requirements such as nickel alloy steel, high chromium alloy steel, high manganese alloy steel, heat-resisting alloy steel, and corrosion-resisting alloy steel.