... flange,Blind flange socket welding flange hubbed flange Material : 1. Carbon Steel :ASTM A105,20, Q235, 16Mn, ... 15CrMo, 12Cr2Mo1, A335P22, St45.8/3. Sealing face: 1.Raised Face RF 2. Male and Female MFM 3.Tongue ... IF 9. Blind Flange BF Name of flange: 1.slip on flange(SF) 2.Welding plate flange,,slip ... standards: JPI 150,300,600RF,RJDIN standards: PN16(1.6MPa), PN40(4.0MPa), DIN2573,2572,2631,2576,2632, ...