... , hubbed flange Tread flange,Blind flange socket welding flange lap joint flange Material : 1. Carbon Steel :ASTM A105,20, ... and Groove TG 4.Flat Face FF 5.Ring Joint RJ Type of connection: 1.Threaded Th 2.weld ... 5. sock welded SW 6. Pipe Joint / Stub End PJ/SE 7. pipe Joint / Plate Ring PJ/PR 8. Integrated ... 11.flange cover(FC) Blind flange(BF) 12.lap joint flange 13.Loose plate Fange 14.Full Face(FF) ...