... other equipment may be necessary.3,Types: Flat Face Flanges, Slip On, Welding Neck, Blind, Threaded , etc.4,Water , Oil, Gas, ... ) ANSI, DIN, EN1092-1, NFE, AS, JISb) Customers' drawings for special use4) Sizes we can produce: DN10 to DN30005) Types ... Kinds of forging:a) Free forgingb) Die forgingc) Rolling7) Rustproof treatment:a) Lightly oiledb) Galvanizedc) Painting with different colorsd) Just keep ...