... 2.Standard:ASME,ANSI,BS,DIN,JIS 3.Quality control:ISO 4.High quality&Co titanium flange1. ANSI flangeStandard : ANSI B16 ... Orifice flanges , Lap Joint flanges , Ring Joint flanges , Long Welding Neck flanges , Figure 8 BlanksPressure Grade : Class 150 , Class 300 , ... , Blind flanges ( GOST 12836-67) , Welding Neck flanges ( GOST 12821-80) , Steel Butt-Welded flanges (GOST 12821-80)Pressure Grade : PN0 ...