... stainless steel 3.Standard: ANSI, JIS, DIN, UNI, Carbon steel flanges weld neckANSI B16.5 FlangesWe are Factory Outlet & Offer OEM ... ANSI,JIS,DIN,BS4504,SABS1123,EN1092,UNI,GOST12820-805.Types: plate, slip on, welding neck, blind, thread, socket weld flange6 ... .Process: free forging, plate cutting, heat treat, machining7.Surface Treat: Anti-rust Oil, Paint ...