BS 10 — BS 10 flanges — Table E
BS 10 BS 10 flanges — Table E — 19 sizes.
| NPS | Flange OD (mm) | PCD (mm) | No. of bolts | Bolt dia (mm) | Thickness (mm) |
|---|---|---|---|---|---|
| 1/2 | 95.3 | 66.7 | 4 | 12.7 | 6.4 |
| 3/4 | 101.6 | 73 | 4 | 12.7 | 6.4 |
| 1 | 114.3 | 82.6 | 4 | 12.7 | 7.1 |
| 1-1/4 | 120.7 | 87.3 | 4 | 12.7 | 7.9 |
| 1-1/2 | 133.4 | 98.4 | 4 | 12.7 | 8.7 |
| 2 | 152.4 | 114.3 | 4 | 15.9 | 9.5 |
| 2-1/2 | 165.1 | 127 | 4 | 15.9 | 10.3 |
| 3 | 184.2 | 146.1 | 4 | 15.9 | 11.1 |
| 4 | 215.9 | 177.8 | 8 | 15.9 | 12.7 |
| 5 | 254 | 209.6 | 8 | 15.9 | 14.3 |
| 6 | 279.4 | 228.6 | 8 | 19.1 | 17.5 |
| 8 | 336.6 | 292.1 | 8 | 19.1 | 19.1 |
| 10 | 406.4 | 355.6 | 12 | 19.1 | 22.2 |
| 12 | 457.2 | 406.4 | 12 | 22.2 | 25.4 |
| 14 | 527.1 | 469.9 | 12 | 22.2 | 25.4 |
| 16 | 577.9 | 520.7 | 12 | 22.2 | 25.4 |
| 18 | 641.4 | 584.2 | 16 | 22.2 | 28.6 |
| 20 | 704.9 | — | 16 | 22.2 | 31.8 |
| 24 | 825.5 | 755.7 | 16 | — | 28.6 |
- Table E: working steam pressure up to 100 psi. Bolt column is bolt diameter.
- 1/2" PCD: Vishal 66.7, Vijay Sales 66.3, Rajtilak 66.8 — kept 66.7.
- 4" bolt count: Vishal and Bhawal 8; Rajtilak shows 4. Kept 8.
- 10" and 12" rows from Vishal Steel only; 18" from Bhawal only; 14" and 24" rows from scattered single listings (24" thickness 28.6 vs 28.7 in another; 24" bolt dia not confirmed).
- 20" PCD conflict: Vishal/Bhawal show 647.4, Rubber Company gasket datasheet 641 — left null.
- Secondary trade-source charts only.
Sources: vijaysalescorp.com/dimension-chart-pipe-flange-bs-10 · vishalsteel.com/bs-10-table-d-flange.html · bhawalsteelagency.com/flanges-rs.pdf · therubbercompany.com/wp-content/uploads/2023/11/BS10-Table-E · rajtilakmetal.com/bs-10-flange.html · metallectsteel.com/bs-10-flanges.html