... Flange,Socket Welding Flange, Blind Flange, Orifice Flange,Ring Joint Flanges, Long Welding Neck Flange, Figure 8 Blanks Standard:BS 4504 SEC 3.1 : WELDING NECK FLANGE ... (111/134), HUBBEDSLIP ON FLANGE(112) ,HUBBED THREADED FLANGE(113),LAPPED PIPE END FLANGE(133), PLATE FLANGE(101),LOOSEPLATE FLANGE(102 ...