BS piping standards
British Standards (UK): UK standards; many replaced by BS EN equivalents but still common on older plants and Indian enquiries. 13 standards most used in piping, flanges, fittings, valves and materials.
| Standard | Covers | Category | On this site |
|---|---|---|---|
| BS 10 | Flanges and bolting for pipes, valves and fittings (Tables D, E, F, H) | Flanges | Open → |
| BS 1387 | Screwed and socketed steel tubes — light, medium, heavy (replaced by BS EN 10255) | Pipe | Open → |
| BS 1560 | Steel pipe flanges, Class designated (aligned with ASME B16.5) | Flanges | Open → |
| BS 1640 | Steel buttwelding pipe fittings | Fittings | Open → |
| BS 3293 | Carbon steel pipe flanges over 24 inch | Flanges | Open → |
| BS 3600 | Dimensions and masses of welded and seamless steel pipes | Pipe | Open → |
| BS 3601 | Carbon steel pressure pipes, room temperature | Pipe | Open → |
| BS 3602 | Carbon steel pressure pipes, high temperature | Pipe | Open → |
| BS 3603 | Carbon and alloy steel pressure pipes, low temperature | Pipe | Open → |
| BS 3604 | Ferritic alloy steel pressure pipes, high temperature | Pipe | Open → |
| BS 3605 | Austenitic stainless steel pressure pipes | Pipe | Open → |
| BS 3799 | Steel pipe fittings, screwed and socket-welding | Fittings | Open → |
| BS 4504 | Circular flanges, PN designated (replaced by BS EN 1092-1) | Flanges | Open → |
Subjects are short summaries, not official titles. Always buy the current edition from the issuing body; check which edition your project specification names.
Frequently asked questions
Which BS standards cover piping?
BS 10 (flanges and bolting for pipes); BS 1387 (screwed and socketed steel tubes — light); BS 1560 (steel pipe flanges); BS 1640 (steel buttwelding pipe fittings); BS 3293 (carbon steel pipe flanges over 24 inch); BS 3600 (dimensions and masses of welded and seamless steel pipes) and others listed on this page.
Last updated 2026-11-02