welding neck flange Material:A105/Q235,304/304L,316,316L,A182F5,A182F11,.ect. Size:1/2''-60'' Pressure:150lbs-2500lbs welding neck flangeMaterial:A105/Q235,304/304L,316,316L,A182F5,A182F11,.ect. Size:1/2''-60'' Pressure:150lbs-2500lbs Facing:RF/FF/Material:A105/RST37.2/C22.8/Q235,304/304L,316,316L,A182F5,A182F11,.ect.Size:1/2''-60''Pressure:150lbs-2500lbsFacing:RF/FF/RTJFeatures Specifications: ...