| Company | Plant Location | MPa | Start Date | Expiry Date | Certificate |
|---|---|---|---|---|---|
| Higgins Concrete Limited | Dannevirke | 50 | 01 Aug 2025 | 31 Jul 2026 | Download PDF |
| Feilding | 50 | 01 Aug 2025 | 31 Jul 2026 | Download PDF | |
| Hastings | 50 | 01 Aug 2025 | 31 Jul 2026 | Download PDF | |
| Marton | 50 | 01 Aug 2025 | 31 Jul 2026 | Download PDF | |
| Otaki (New Plant) | 50 | 01 Aug 2025 | 31 Jul 2026 | Download PDF | |
| Porirua | 50 | 01 Aug 2025 | 31 Jul 2026 | Download PDF | |
| Richmond | 50 | 01 May 2025 | 30 Apr 2026 | Download PDF | |
| Taupo | 50 | 01 Feb 2025 | 31 Jan 2026 | Download PDF | |
| Tauranga | 50 | 01 Aug 2025 | 31 Jan 2026 | Download PDF | |
| Te Matai | 50 | 01 Aug 2025 | 31 Jul 2026 | Download PDF | |
| Waingawa | 50 | 01 Aug 2025 | 31 Jul 2026 | Download PDF | |
| Waipukurau (New) | 50 | 01 Nov 2025 | 31 Jul 2026 | Download PDF | |
| Wellington | 50 | 01 Aug 2025 | 31 Jul 2026 | Download PDF | |
| Hi-Stress Concrete (2020) Limited | Christchurch | 50 | 01 May 2025 | 30 Apr 2026 | Download PDF |
| Holcim (New Zealand) Limited | Avondale | 50 | 01 Nov 2025 | 31 Oct 2026 | Download PDF |
| Bombay | 50 | 01 Nov 2025 | 31 Oct 2026 | Download PDF | |
| Christchurch North | 50 | 01 May 2025 | 30 Apr 2026 | Download PDF | |
| Hawera (Normanby) | 50 | 01 Nov 2025 | 31 Jul 2026 | Download PDF | |
| Hawkes Bay | 50 | 01 Aug 2025 | 31 Jul 2026 | Download PDF | |
| Horotiu | 50 | 01 Feb 2025 | 31 Jan 2026 | Download PDF | |
| Kiwi Point, Wellington | 50 | 01 Aug 2025 | 31 Jul 2026 | Download PDF | |
| Upper Hutt (Satellite) | 50 | 01 Aug 2025 | 31 Jul 2026 | Download PDF | |
| Masterton | 40 | 01 Nov 2025 | 31 Jul 2026 | Download PDF | |
| Matamata | 50 | 01 Feb 2025 | 31 Jan 2026 | Download PDF | |
| Morrinsville | 50 | 01 Feb 2025 | 31 Jan 2026 | Download PDF | |
| New Plymouth B | 50 | 01 Aug 2025 | 31 Jul 2026 | Download PDF | |
| Ohau | 50 | 01 Aug 2025 | 31 Jul 2026 | Download PDF | |
| Rotorua (New Plant) | 50 | 01 Feb 2025 | 31 Jan 2026 | Download PDF | |
| Setters Line, Palmerston North | 50 | 01 Aug 2025 | 31 Jul 2026 | Download PDF | |
| Taupo | 50 | 01 Feb 2025 | 31 Jan 2026 | Download PDF | |
| Tauranga | 50 | 01 Feb 2025 | 31 Jan 2026 | Download PDF | |
| Waipapa | 50 | 01 Nov 2025 | 31 Oct 2026 | Download PDF | |
| Wanaka | 40 | 02 Mar 2025 | 30 Apr 2026 | Download PDF | |
| Whakatane | 50 | 01 Feb 2025 | 31 Jan 2026 | Download PDF | |
| Whitianga | 50 | 01 Feb 2025 | 31 Jan 2026 | Download PDF | |
| Hynds Pipe Systems Limited | Pokeno | 50 | 01 Feb 2025 | 31 Jan 2026 | Download PDF |