Steel products for farmers and industry

At Mainline, we’re in the business of creating and manufacturing safe and reliable steel products. From our well-known Mainline fuel storage tanks to air conditioning ducting, letterboxes, dog kennels and chicken coops, our industry expertise ensures you receive a steel product of quality.

Fuel Tanks

From on-ground tanks to farm fuel tanks and everything in between, Mainline’s fuel tanks are designed for functionality. All our fuel storage tanks are WorkSafe approved and comply with HSNO regulations.

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Sheet metal

Mild, aluminium or stainless steel, copper and brass - at Mainline our fabrication and welding workshop can manufacture a range of sheet metal products whatever your material needs. What’s more, we stand by our products.

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Dog kennels and carriers, chicken coops and water troughs, at Mainline we’ve got the needs of your animals covered. From standard models to bespoke designs, your animals will feel right at home with a Mainline roof over their heads.

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The Mainline promise

Customised Products

We work with our clients to design and manufacture tank solutions and sheet metal products to meet their business and industry needs.

Purpose-built workshop

Our team of design engineers and welders work in a purpose-built workshop, creating products that continually meet our high standards.

Nation-wide service

Our fuel tanks and sheet metal products can be found all over New Zealand. We send them nationwide from our headquarters in the Waikato.

recent projects

John Knox coffee served up on Mainline counter

If you’re passing by the award-winning South Bloc building on Knox Street, stop in and grab a coffee from John Knox. Not only do they make great coffee, they serve it up on a beautiful brass sheet countertop, created by the Mainline team. The benchtop, which is 5metres long with a 24mm box fold, is made of 2400 x 1200 brass sheets. These were butt joined and glued to plywood and weighted down to get a seamless finish. We made a plywood template to run a flush trim router to fit the shape of the two sinks into the brass bench top, but the real challenge was delivering it without any scratches to the polished brass.

Mainline exceeds customer expectations with upgrade of diesel storage tank

When Auckland specialist vehicle repair service Fine Finish on Rosebank Rd needed a new diesel storage tank, a quality, and more importantly compliant, product was top of the agenda. Mainline delivered – beyond expectations.
Fine Finish on Rosebank, a high-quality panel beaters and crash repairs specialist in Auckland, needed an upgrade on their old diesel storage tank.

“The old one was getting a bit crusty, but that’s about all I knew,” Jo Lynch, administrator at Fine Finish says. Security and safety were obvious priorities in such a work environment and after a quick Google search, Mainline’s website provided all the assurance Jo needed to make a call.

Mainline not only manufacture quality products, but storage tanks, such as that which Jo needed, meet WorkSafe compliance for a diesel tank connected to a burner. “The compliance officer will look for a tank that has a WorkSafe Register/approval number and a fabricator who has WorkSafe approval,” explains Mainline owner, Trisha King. “This is particularly important for our customers, like Jo, who have an annual audit. Our register number is FAB0018, otherwise the tank would not be signed off on site. This makes the service and products we offer, specialist.”

Service made simple
Right from the first contact, Jo was really impressed at the service she received from Mainline. “The staff were easy to deal with and answered my million and one painful questions,” Jo recalls. “I wasn’t too sure what I was doing but the help and advice Trisha gave me was awesome.”

During her phone call, Jo was guided through the various storage tank options on the website, all her questions were answered fully, and Jo knew she had found just the product she needed. “I really couldn’t fault them,” she says.

Why us?
At Mainline, we are passionate about providing customers with excellent service and quality workmanship – and have been doing so for 30 years. We are New Zealand’s leading producer of fuel storage tanks and sheet metal products, all precision manufactured to the highest industry standards.
Jo could order a 490 litre home-heating tank for Fine Finish, knowing the product would be delivered on time and with Mainline’s full guarantee.
“I was told the tank would take three weeks to make. Then they emailed me a quote on the same day and it was here three weeks on the dot. It was all really easy,” she says.
Manufactured in a modern purpose-built workshop in the Waikato, Mainline’s fuel tanks and sheet metal products can be found all over New Zealand. If our extensive standard range does not meet a specific need, we work to design and manufacture products to meet clients’ requirements. With our 18-strong team, we can offer a huge wealth of experience and industry knowledge and as Jo quickly discovered, we are expert problem-solvers.

Need a storage tank? Contact the Mainline team today.

Fanfare of Fieldays

Fieldays is a regular event on our calendar but this year was bigger and better than ever before. Our new site (G70) put us closer to other dairy related industries, which was a good move for the team. Sporting a new look and logo we put one of our tanks to good use, giving away 200 litres of free water over the four days – in branded water bottles of course! Mainline also helped four St Paul’s Collegiate School students with an innovation – the De-fence tool. Designed to make the removal of old gate-latch staples easy, the boys won the Young Inventor of the Year award for their efforts.