... :ANSI, ASTM A182, DIN, EN1092-1 stainless steel welding neck flangeGeneral Descriptionwe can manufactur and supply flanges as per the ... may be necessary. Types: Flat Face Flanges, Slip On, Welding Neck, Blind, Threaded , etc. Water , Oil, Gas, Industrial Using Detailed ... 7) Rustproof treatment: a) Lightly oiled b) Galvanized c) Painting with different colors d) Just keep the flanges dry and clean ...