... , Orifice Flanges, Lap Joint Flanges, Ring Joint Flanges, Long Welding Neck Flanges, Figure 8 BlanksPRESSURE GRADE: Class150,Class300,Class600,Class900 ... : BS 4504(PART-1) PRESSURE GRADE:PN2.5 TO PN40Standard: BS 10 : Welding neck Flanges, Plate Slip-on Flanges, Screwed Boss ... Slip on;15.Forged Flanges Table H ScrewedSIZE: 1/2" TO 48" Welding Neck Flanges, Slip on Flanges, Threaded Flanges, Socket ...