Material Stainless steel, Carbon steel, Alloy steel Standard ASME/ANSI B16.5 ASME B16.47(A) ASME B16.47(B) ASME B16.48 Type SO WN SW TH LJ/SE LJ/RJ BL Size 1/2"-24" 26"-72" Pressure Class150-2500 Surface Anti-rust Oil, Transparent/Yellow/Black Anti-rust Paint, Zinc Galvanized, Flame plating Facing FF RF MFM TG RJ Producing process Billet-cutting-forging-heating-lathe-drilling-inspection-marking-packing-export-ANSI flange Package Plywood cases or pallet ,or as customers' requirement Applications Petroleum, chemical, power, gas, metallurgy, shipbuilding, construction, etc Inspection ANSI Flange accept Factory in-house or third party inspection Process Forged Check from website: http://www.steelfittings-flange.com/e_products/?big_id=4