... pressure: 150lb, 300lb, 400lb, 600lb,900lb, 1500lb,2500lb type specificationitem: carbon steel slip on flangesize: 1/2' to 48'standard: ANSI ... cold-galvanized, 3PE coating, epoxy coating, etc.package: plywood caseuse: petroleum, gas, chemical, metallurgy, electric station, shipbuilding, construction, etc.other types ... lap joint stub end, steel pipes, socket fittings, etc. standard carbon steel flange