See below for NB to mm conversion. 15% restocking fee applies to this range. Need help? Contact us. Not all products, inc Downee and Interclamp, are kept on-site. For same-day over-the-counter purchases, call to confirm availability.
Restocking Fee - Please note there is a 15% restocking fee on all exchanges and returns on the fence and gate fittings range. If you need help with sizing please chat with our friendly team. Not all products are kept on-site. For same-day over-the-counter purchases, call to confirm availability.
PIPE SIZE CONVERTER
| PIPE SIZE Nominal Bore | Internal Diameter | External Diameter | |
| 15NB | 1/2" | 21.3 mm | 27/32" |
| 20NB | 3/4" | 26.9 mm | 1 1/16" |
| 25NB | 1" | 33.7mm | 1 11/32" |
| 32NB | 1 1/4" | 42.4mm | 1 11/16" |
| 40NB | 1 1/2" | 48.3mm | 1 29/32" |
| 50NB | 2" | 60.3mm | 2 3/8" |
| 65NB | 2 1/2" | 76.1 mm | 3" |
| 80NB | 3" | 88.9mm | 3 1/2" |
| 90NB | 3 1/2" | 101.6mm | 4" |
| 100NB | 4" | 114.3mm | 4 1/2" |
| 125NB | 5" | 139.7mm | 5 1/2" |
| 150NB | 6" | 165.1mm | 6 1/2" |
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