Our range of PN16 black threaded flanges to BS EN 1092-1:2018 (previously BS 4504) can be found here, we offer these type 13 flanges from stock in sizes 2” (50mm) to 6” (150mm) nominal bore.
All of the flanges in this range are forged from black (self-colour) S235JR mild steel, come with female BSPP parallel threaded ends to BS EN 10226-1, a raised face to provide a stronger seal and full 3.1 mill test certification. These flanges are 16 bar (PN16) pressure rated with a maximum operating temperature of 400°C.