Hydroweld Limited

Hydroweld Limited ⚙️ Poly welding Specialists Based in Auckland.
⚙️ Connexis Certified Fusion Technicians.
⚙️ Product supply.
⚙️ Water Reticulation.
⚙️ Pressure Testing.

HYDROWELD LIMITED, we specialize in Poly welding techniques such as butt welding, extrusion welding, and electrofusion welding, proudly building our reputation from the ground up. Based in Auckland, New Zealand, we have successfully completed some of the largest projects in the country, including butt welding both rising and gravity sewer pipeline spanning over 5 kilometers long. We take pride in

being the most experienced in welding large-diameter polyethylene pipes, including a remarkable 1.6 diameter pipe, the largest in New Zealand. Our team consists of Connexis-certified fusion technicians, along with Friatec and Plasson accredited installers, ensuring top-notch quality and expertise in every job. Our commitment to our clients, communities, and local councils sets us apart, and we take immense pride in delivering unmatched quality in our work. At HYDROWELD, we believe that our values and commitment to excellence are the foundation of our success. 🏆

08/12/2025

Yes, as part of our Waiwera Water and Wastewater Servicing Programme, we’re installing a new wastewater pump station and a 4.5-kilometre pipeline to connect it to the Hatfields Beach pump station 🏗️ The first section of the wastewater pipe is currently being installed on the Hibiscus Coast Highway and once the construction is complete, we’ll then be pumping the wastewater on from Hatfields Beach to the Army Bay Wastewater Treatment Plant, where it will be treated 👉 At the moment, the wastewater in the area goes through the Waiwera Wastewater Treatment Plant, but once this new system is up and running, we’ll be decommissioning the plant since it’s reached the end of its service life. The change in the treatment plant will mean a change in where the treated wastewater is discharged too, going from being discharged into the Waiwera estuary to being discharged via the Army Bay outfall after a more robust treatment process 💩 And the water side of things? We’ll be installing a new watermain to increase the reliability of the local network and cater for future growth 💧 Like we said, we’re on a highway to improved water and wastewater services in Waiwera!

01/10/2025

Attending the Water New Zealand Conference & Expo this week?

Be sure to visit Michael and Jason at Booth 206-211 with our friends at Asmuss Steel & Flow Control!

They'll be there all week showcasing why Plasson is the best under pressure 💦

01/10/2025

The Water New Zealand Conference & Expo is officially underway, and our team is ready to connect with you at Te Pae, Christchurch, three days focused on delivering a resilient and sustainable water network. 💦

💦Visit us at Booths 206-211 to meet our experts.

We partner with industry leaders to ensure the highest quality products for your projects. Here’s a big shoutout to our key partners. Valmatic, PLASSON, +GF+, AVK

Your Partner for Sustainable Water Solutions - 👷 Expert Advice | 👍 Innovative Products | 🤝 Industry Leaders

Our team is ready to help you tackle your water challenges. 👉 See you there! 🧡

🌐 Explore our products and services: https://www.asmuss.co.nz/contact-us

📧 [email protected] | 📞 09 573 00 99 or 0800 Asmuss

01/10/2025
17/09/2025

⚙️ The devil is in the details. 👀

That’s where the difference lies in the things you can’t cheat. The difference between a product that limps along for a year… or a pipeline that runs strong for a century.

At HYDROWELD NZ, we don’t just hold a ticket we’ve earned our place as one of New Zealand’s accredited large-bore Plasson installers.

Case in point - installing a 1000Ø → 400Ø saddle at Rotorua Wastewater Treatment Plant. Big pipe, bigger responsibility. No shortcuts. No guesswork. Just discipline, QA, and pride in getting it right the first time. 🏆

Because in this game, merit matters more than money. The details decide whether you’re building problems… or building savings.

Anyone can buy a qualification.
Not everyone can earn it!

A testament to quality → each time → every time HYDROWELD NZ

Promains Limited
PLASSON Australia
Plasson South Africa
Aliaxis
PF-Schweißtechnologie GmbH
ROTHENBERGER
Asmuss Steel & Flow Control
Blackhawk Gazebo and Display

08/09/2025
💙 Happy Father’s Day 💙Thursday evening, we switched off the welders and swapped our tools for tongs and a great BBQ, ser...
05/09/2025

💙 Happy Father’s Day 💙

Thursday evening, we switched off the welders and swapped our tools for tongs and a great BBQ, serving up Boerewors and Oepsies at Coast Kids on Karepiro. Surrounded by our loved ones, it was the perfect reminder of what really matters.

The highlight was the incredible Haka performed by the children to kick off the evening — a powerful expression of culture, pride, and unity. Moments like these remind us exactly why we work so hard every day.

It was an evening filled with laughter, good food, special memories, and a lively Rugby Quiz. To all the dads and father figures out there, thank you for everything you do. Wishing you a well-deserved day of celebration and love with your families.

Big Thank you Coast Kids on Karepiro

28/08/2025

🩵 Beautiful North, Great People ⚙️

We’ve recently had the pleasure of welding in paradise (with a side of mud!) installing 560Ø Polyethylene [RC] pipe from Asmuss for Webb Contracting in Whangārei as part of the Poroti Trunkmain Renewal Project.

This new section replaces an aging concrete-lined steel main that has been prone to slips and leaks, delivering a pipeline that’s stronger, more flexible, and built to last for the community.

Working in the countryside always brings its challenges – from mud and steep slopes to gusty winds but it also comes with stunning views! at HYDROWELD NZ, we thrive in these conditions, consistently delivering the same high-quality results every time.

A big thank you to Sam Webb and his team from Webb Contracting it’s always an absolute pleasure welding for you.

Whangarei District Council
Webb Contracting
Fulton hogan
Asmuss Steel & Flow Control

23/08/2025

⚙️ HYDROWELD NZ goes green! ♻

We’re stoked to have retired our petrol generators and transitioned to Instagridportable battery power unit for all our welding and install operations at Auckland Airport. Let’s face it – neither our technician's or the public enjoy the noise and fumes of generators on site.

This isn’t just a convenience upgrade – it was a no-brainer for us at HYDROWELD NZ.

Instagrid improves performance, safety, and sustainability:

🔧 Technical reliability – Instagrid units deliver consistent, clean power with no voltage drops, which is critical for maintaining weld quality and ensuring compliance with strict welding specifications. A 30-minute charge gives us capacity to complete up to 45 ducting electrofusion welds.

📊 Operational efficiency & safety – With instant start-up, no refuelling downtime, and no maintenance requirements, operations run smoothly and on schedule. At just 20kg, the unit is easy to carry across site – from trench to trench, into confined spaces, or anywhere access is tight. No long extension leads also means fewer trip hazards, keeping our worksites safer for everyone.

🌱 Environmental impact – Instagrid eliminates noise and local emissions, while cutting out petrol consumption entirely. That means no exhaust fumes, no fuel storage, no risk of spills – and a cleaner, safer environment in high-security and sensitive areas.

HYDROWELD NZ core values; it’s about welding smarter. Cleaner technology, greater efficiency, and safer sites mean we can deliver welding excellence today while building a more sustainable tomorrow – for our clients, our communities, and our industry. 🏆

Instagrid
Asmuss Steel & Flow Control
PLASSON Australia
Pacific Diamond Tools
Auckland Airport

🩵 From humble beginnings to the grand stage, we’re proud to share this incredible news! ⚙️HYDROWELD NZ has been named a ...
20/08/2025

🩵 From humble beginnings to the grand stage, we’re proud to share this incredible news! ⚙️

HYDROWELD NZ has been named a Finalist in Category A – Projects between Warkworth and Pokeno valued up to $1 million at the Auckland CCNZ Hynds Construction Awards.🏆

We’re proud to be part of this industry and grateful to CCNZ for advocating on behalf of members, providing support and resources, and fostering a strong, competitive civil construction sector.

A huge thank you to our valued clients, partners, and suppliers for being part of this journey.

29/07/2025

⚙️ Big Pipe, Massive Responsibility ⚙️

When it comes to large bore pipe welding, there’s massive responsibility and at HYDROWELD NZ, we take that role incredibly seriously from start to finish.

We’ve just kicked off welding at the Rotorua Wastewater Treatment Plant, starting with an electrofusion test weld on a 1000mm pipe. Jobs like these aren’t just about size they’re about precision, planning, having the right gear calibrated and tested, and doing the basics to a T, every time - each time.

We take tremendous pride in our large bore certification it can’t be given or bought. It’s earned through experience, hard work, and a genuine commitment to doing things right from the start.

🔨 Please note: No hammers were harmed in the making of this video. (Or needed.) 🩵

PLASSON AustraliaAsmuss Steel & Flow Control One Stop Cutting Shop signwriting.co.nz Civil Contractors New Zealand Whangarei District Council Watercare

28/05/2025

⚙️ Check out our latest on-site footage from a recent welding project in Pukekohe. 🎥

▶️Product supplied ✅

▶️Welding supplied ✅

Another successful delivery for a valued client 🏆

PLASSON Australia Watercare Asmuss Steel & Flow Control

Address

Whangaparaoa
0930

Opening Hours

Monday 7am - 5pm
Tuesday 7am - 5pm
Wednesday 7am - 5pm
Thursday 7am - 5pm
Friday 7am - 5pm
Saturday 7am - 2pm

Telephone

+64223242125

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