... FLANGE: WELDING NECK ,SLIP ON ,BLIND ,PLATE,THREADED,LAPPED ,SCREWDE,SOCKET WELDING Standard: ANSI B16.5, ASME B16.47 FLANGE Size ... 80" DN15 to DN2000 Design: welding neck, slip on, blind, socket welding, threaded, lap-joint Pressure: 150#, 300#, 600#,900#,1500 ... #, 2500# Wall thickness for welding neck flange: STD, SCH40, SCH80, SCH160. SCHXXS ...