Note: Dimensions of the most popular flanges (Plate, Boss, and Weld-neck) are provided for the obsolete BS4504 flanges
and the current BS EN 1092-1 flanges. In practice the dimensions are similar in all but a few minor dimensions.
| BS4504 PN16 Flanges BS EN 1092-1 PN16 |
BS4504 PN25 Flanges BS EN 1092-1 PN25 |
BS4504 PN40 Flanges BS EN 1092-1 PN40 |
BS 1600 Pipes | BS3600 Pipes | Pipe Threads |
Note:
Standard BS 4504 is now superseded by
BS EN 1092-1:2002 Flanges and their joints. Circular flanges for pipes, valves, fittings and accessories, PN designated. Steel flanges
BS EN 1092-2:1997 Flanges and their joints. Circular flanges for pipes, valves, fittings and accessories, PN designated. Cast iron flanges
BS EN 1092-3:2003 Flanges and their joints. Circular flanges for pipes, valves, fittings and accessories, PN designated. Copper alloy flanges
BS EN 1092-4:2002 Flanges and their joints. Circular flanges for pipes, valves, fittings and accessories, PN designated. Aluminium alloy flanges
BS EN 1515-1:2000 Flanges and their joints- Bolting: selection of bolting.
BS EN 1515-2:2000 Classification of bolt material for steel flanges PN designated.
BS 3600:1997 :Specification for dimensions and masses per unit length of welded and
seamless steel pipes and tubes for pressure purposes
.. Is withdrawn and replaced By BS EN 10220:2002..Seamless and welded steel tubes. Dimensions and masses per unit length