... B16.48Types: Welding Neck Flanges, Slip on Flanges, Threaded Flanges, Socket Welding Flanges, Blind Flanges, Orifice Flanges, Lap Joint Flanges, Ring ... Flanges(105)PRESSURE GRADE: PN2.5 TO PN40Standard: BS 4504(PART-1) PRESSURE GRADE:PN2.5 TO PN40Standard: BS 10 : Welding ... " TO 48" Welding Neck Flanges, Slip on Flanges, Threaded Flanges, Socket Welding Flanges, Blind Flanges, Orifice Flanges