Horizontal Directional Drilling allows the installation of underground services without the disruption of surfaces, structures or other pre-existing services.

The Utilities Infrastructure NZ Ltd fleet includes specialised vacuum excavation equipment. Also known as hydro-excavating, potholing, hydro trenching, or hydro digging.

Polyweld NZ Ltd, is the specialised PE welding division of UINZ, offering clients a unique and seamless approach to pipeline projects.

Pipe bursting is a trenchless method of replacing existing buried pipelines, such as Sewer, Stormwater, and any earthenware, AC (Asbestos cement) or PVC-type pipelines without disrupting roading or footpaths.

Pipe ramming involves the installation of steel casings utilising the energy from a percussion hammer attached to the pipe’s end.

From local catchments to ocean outfalls our teams have had a wide level of experience dealing with large-diameter pipelines and structures in local waterways.

UINZ is an industry leader in pipeline infrastructure within the oil and gas, water, wastewater, stormwater, power and communications sectors.

UINZ offers distinctive drainage capabilities to the South Island of New Zealand, employing our expertise in pressure sewer systems and deep drainage.

Water reticulation is at the core of what we do, our expert teams are experienced in installing portable water assets from sub mains to large pipelines.