... Material :Carbon steel ,stainless steel, alloy steel Type150lb threaded steel so flangeStandardANSI:ANSI B16.5ANSI B16.47MSS SP44ANSI B16 ... -80,GOST12821-80 TypeWelding Neck Flanges, Slip on Flanges, Threaded Flanges, Socket Welding Flanges, Blind Flanges, Orifice Flanges, ... Our products :carbon steel ,alloy steel ,stainless steel pipes and pipe fittings long/short radius elbows(EL/ES),straight ...