DIN 2633 PN16 Welding Neck Flanges like DIN Weld Neck Flange, DIN Threaded Flange,DIN Lap Joint Flange, & DIN Blind Flange producing base which owns equipments conforming to international technical level and is well equipped with a whole set of advanced plasma refining equipments. DIN 2633 PN16 Welding Neck Flanges Pipe Flanges and Flanges Fittings standard covers pressure-temperature ratings, materials, dimensions, tolerances,marking, testing, and methods of designating openings for pipe flanges and flanged fittings.