... ,2500lb type specificationitem: carbon steel slip on flangesize: 1/2' to 48'standard: ANSI B16.5, B16.47pressure: 150lb, 300lb, 400lb ... weld flange, threaded flange, ring joint flange, etc. OEM to special requirement.pipe fittings: steel pipes, elbow, tee, cross, reducer, flange, cap ...