The IMPACT range offers off-the-shelf manhole grilles in a variety of sizes to fit existing frames. We also do custom designed stainless safety grilles to suit your engineering project needs.
Find out moreKeeping entrances to underground maintenance and public utilities locked down tight is extremely crucial. Prevent accidents and keep utility holes safe and secure from unauthorised access with IMPACT Safety Grilles.
Impact Engineering is a New Zealand owned and operated manufacturing engineering company based in Tauranga, Bay of Plenty. We are a preferred supplier for national distributors, contractors, and local councils. We’ve manufactured over 15,000 grilles for clients across New Zealand – and counting!
316L Stainless Steel
All safety grilles are manufactured using Grade 316L stainless steel for durability that stands the test of time.
Expand and Lock
Patented ‘Expand and Lock’ design offers quick and easy installation and requires no modification to the manhole castings.
Easy Installation
Easy to install, our grilles saves you time and money.
Enhanced Durability
For enhanced durability, all welds are passivated in an acid bath before final assembly and quality control.
Load Tested
Have peace of mind knowing your grille won’t give way. Load tested to 1000kg; all manhole safety grilles meet AS3996 Class A Load Classification Standard.
Variety of Sizes
Manhole protection grilles come in a variety of sizes to fit existing frames as well as the latest hinged lids and non-rock heavy-duty castings.
Retrofitting
Manhole covers and grilles can also be retrofitted to specific requirements.
Anti-Theft Cable
A 2.5mm anti-theft cable comes standard to deter theft and vandalism while ensuring grille is re-installed before the lid is closed.
It was not long before Impact Engineering became a trusted name in Mechanical Engineering and Servicing Industry related to Infrastructure and Reticulation. The experience and capability of the team was put to test when they were invited to join a small group of select companies to propose prototypes for NZ safety grilles. This opened a new door of opportunity. In 2013, the company focused on a new objective and specialised in providing the solution to the safety risk presented by uncovered maintenance manholes.
Today, Impact Engineering is a preferred safety grilles NZ supplier for national distributors, contractors and local councils. We’ve manufactured over 15,000 stainless steel grilles for clients across New Zealand – and counting!
Innovative designs and a commitment to reliable supply has seen the company forge strong relationships with major distributors. Established merchants such as Humes, Hynds and Pipe and Infrastructure ensure a nationwide distribution of Impact Safety Grilles, wherever there is a need.
Browse our range of Impact Grilles including our pumpstation grate, Maestro grille, and square grille options.
Underground maintenance works are prone to many hazards and accident potential. Accidents can cause serious injuries and even death. Leaving the facility with inadequate protection from unauthorised access can be disastrous. Whether for residential, commercial, or municipal applications; keep safety paramount with Impact Grilles.
Impact Engineering is the preferred choice for councils, contractors and key merchants such as Hynds, Humes and Pipe & Infrastructure. Committed to innovative designs and superior quality, we provide reliable stainless steel grille products that saves you time and money.
Our manhole protection grilles come in a variety of sizes to fit existing frames as well as the latest hinged lids and non-rock heavy-duty castings. We have developed a variety of grille specifications to meet the diverse requirements of manholes constructed over the last 60 years!
Impact Engineering supplies 26 different “off the shelf” varieties. Manhole covers and grilles can also be retrofitted to specific requirements. We also specialise in non-circular, rectangular, or square grilles; heavy duty pumpstation grates; single lid to multi lids in a single frame; valve chambers and wet wells.
IMPACT has a separate and specialised manufacturing plant that can produce huge numbers of stainless grilles NZ to meet engineering requirements.
Contact us to find out more about our range of stainless steel safety grilles.
When it comes to New Zealand manholes and wet wells there is no “one size fits all.” Impact Engineering has developed a range of 26 types of safety grilles to meet the diverse specifications of utility holes constructed in New Zealand over the last 60 years. This off-the-shelf selection features sizes between 445 and 900mm. Table Below illustrates the different grilles and their sizes. Manhole covers and grilles can also be retrofitted to your specific engineering requirements.
If you require any assistance or more information, please contact Us.
The first step to ensuring optimal security and product life is fitting Impact Safety Grilles the right way. Watch this helpful stainless steel grille installation video guide and read further instructions below.
NOTE: The Anti-Theft Cable is optional but is recommended to deter theft and vandalism while ensuring grille is re-installed before the lid is closed.
140 Birch Avenue, Judea, Tauranga 3110
07 578 8751