BS437：1978 Single Spigot and Socket Cast iron drain Pipe with Flexible rubber ring joint
Cast Iron Pipe conforming to BS437：1978
Material: Grey Cast Iron
Size: DN75-DN225
Internal and external Coating: Black bitumen
| (mm) | Pipe body (mm) | (mm) | Socket (mm) | (mm) | ||||
| Nominal size | A | B | Nominal Wall thickness C | F | G | H | J | Length |
| DN | Min Internal diameter A | Max External diameter B | Min Internal diameter F | Nominal External diameter G | Min Thickness H | Min Depth J | L | |
| 75 | 74.00 | 97.00 | 7.40 | 113.00 | 160.00 | 19.00 | 76.00 | 1830+/-5 |
| 100 | 99.00 | 119.00 | 7.50 | 135.00 | 185.00 | 22.00 | 76.00 | 1830+/-5 |
| 150 | 150.00 | 171.00 | 8.30 | 187.00 | 240.00 | 22.00 | 89.00 | 1830+/-5 |
| 225 | 225.00 | 261.00 | 9.40 | 277.00 | 340.00 | 27.00 | 102.00 | 1830+/-5 |