Our aim is to

Provide asset owners professional Cathodic Protection services to keep their buried or immersed assets corrosion free

Engineering services

Are designed, installed and monitored by CPNZ.

Field Services

Testing, data logging, surveys
and much more.

Pipeline Services

CPNZ work on pipelines from initial design concept right through it's life span.

Asset Management

We make sure your asset is compliant.


We're here to support
New Zealand's critical infrastructure

Corrosion attacked assets reducing its life span, and ultimately can lead to catastrophic failure. CPNZ’s aim is to assist asset owners to prevent these losses and incidents.

Assets that can benefit from Cathodic Protection services include LPG Tanks, Water, Gas, Fuel and Wastewater pipelines, Wharf piles, Steel tunnels, and Water Tank internals (see photo), Penstocks, Clarifiers and Reinforcing steel in concrete structures.


• CP Design
• CP Product supply
• CP System installation and commissioning
• Six monthly or yearly inspections, in accordance with AS2832 suite of standards.
• Coating condition surveys: DCVG, ACVG, CIPS, Current mapping
• Fault identification and repair
• Exothermic Welding (CAD welding)
• Soil resistivity measurements
• Corrosion rate assessment
• Pipe locating with accurate locations
• Installation of Remote monitoring of CP systems using the MobilTex remote monitoring system

Cargo Image

6 Days

Open Monday - Saturday


Years in the Industry



We also stock a wide range of products and equipment

If there is a product that you're after that you can't see on our website, we encourage you to get in touch as we can source it for you. View our products and equipment here >

• Corrosion Monitoring

• Rectifiers

• Anodes

• Zinc/Magnesium Ribbon

• Back fill for sacrificial & impressed current anodes