... ,BS standard 4,Pipes pipe fittings & flanges 5Carbon steel and stainless steel Carbon Steel & Stainless Steel Flanges according to ASTM, DIN, JIS, BS standard ... B16.48,Socket Welding Flange, Blind Flange, Orifice Flange,Ring Joint Flanges, Long Welding Neck Flange, Figure 8 Blanks ... Conncetion typeRaised face,Flat face,Ring type joint,Lap joint face, Large Male Female,Smallmale ...