... 9001-2000 2.150-2500Lbs 3.Weld Neck,Slip-On,Socket Weld,Lap Joint,Threaded, Orifice flange,Swivel flange 4.OEM ... -On, Welding Neck, Blind, Socket Welding6.Type of face:RF,FF,G,RJ,FF7.Usage:chemical industry, electric power,oil pipe system,building ...