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 ... /Material:A105/RST37.2/C22.8/Q235,304/304L,316,316L,A182F5,A182F11,.ect.Size:1/2''-60''Pressure ... in flow whenusing a socket welding flange. LWN stainless stell welding neck flange