... , 15CrMo, 12Cr2Mo1, A335P22, St45.8/3. Sealing face: 1.Raised Face RF 2. Male and Female MFM 3.Tongue and ... Groove TG 4.Flat Face FF 5.Ring Joint RJ Type of connection: ... joint flange 13.Loose plate Fange 14.Full Face(FF) 15.Socket Rised Face Flang(SRFF) 16.galvanized threaded flange 17 ... ,2634,2545(PL,SO,WN,BL,TH)UNI standard.GB standard. JB standard. HG standard for China Markets ...