Engineering Fabrication and Welding in Whangārei
Something has cracked, worn out, or does not exist yet. We cover both sides of that: engineering fabrication where a part or assembly is designed and built from scratch, and welding and structural repair where existing steel needs to be put right.
Speak with Marion about your equipment, location and the best next step.
Who this is for
- Operators needing structural or equipment repairs that will hold up
- Businesses wanting a custom bracket, frame, mount, guard or body built
- Owners modifying trucks, trailers or plant for a specific job
- Rural and industrial clients with a one-off part that cannot be bought
Signs you need this service
- Cracked or broken structural steel
- Bent, worn or missing brackets and mounts
- Repeated failure at the same welded joint
- A machine that needs modifying to do the work you have won
- A part that is obsolete or no longer available
How we help
How the process works
- 1
Send the job
Photos, dimensions, a sample part or a drawing all help us scope it accurately. Call first if it is holding up work.
- 2
Confirm the approach
We agree what will be built or repaired, the materials, and a realistic timeframe before starting.
- 3
Fabricate or repair
Work is completed at the Whangārei workshop, or on site where the job allows.
- 4
Fit, finish or return
Finished parts are fitted, or handed back ready to install, with any protective finish agreed up front.

Workshop vs on-site
Larger fabrication, body builds and anything needing accurate setup are workshop jobs at 15 Union East Street, Whangārei.
Field welding and on-site repair can be handled through our mobile service where it is safe and practical, subject to the job, your location and current workload.
What you get out of it
- Repairs that hold up under real loading and Northland conditions
- Purpose-built parts that suit the machine and the job
- One point of contact for the steelwork and the hydraulics
Equipment and industries
Trucks and trailers, tanker and service body builds, sweeper and brush attachments, excavator and loader attachments, waste truck bodies, farm gear and fixed industrial plant.
Mainly mild and structural steel typical to industrial and rural work. Talk to us first about anything unusual so we can confirm it is a job we should take on.
Engineering fabrication
Fabrication is about making something that did not exist before, or replacing something you can no longer buy. We build brackets, mounting frames, pivot assemblies, guards, sub-frames, truck bodies and attachment mounts from measurements, a sample part or a sketch.
Because we also do hydraulics, a fabrication job can include the rams, hoses and plumbing in the same build rather than being handed between two workshops. Truck body fit-outs and attachment installs are regular examples of that: the steelwork and the hydraulics get designed to work together.
We build for the environment the part will live in. Northland work means mud, salt air, vibration and shock loading, and a part that only looks right on the bench does not last long in that.
Welding and structural repair
Welding work is about putting existing steel right. That covers cracked chassis members, torn bucket and blade edges, broken mounts, failed weld seams, worn wear plates and general structural repair on plant, trailers and industrial equipment.
We run MIG, TIG and arc processes and pick the one that suits the material, position and the load the joint has to carry. Where the same joint has failed more than once, we look at why, because a repeat crack is usually a design or loading problem rather than a bad weld.
Field welding on site is possible for many repairs where it is safe and practical to do so. Larger or more precise work is better done at the Whangārei workshop.
Frequently asked
Related services
Line Boring
In-house line boring and re-bushing of worn pivot points, bosses and pin bores on plant and attachments.
Read about Line BoringCustom Hydraulic Solutions
System design, component selection and installation for machinery that needs a tailored hydraulic setup.
Read about Custom Hydraulic SolutionsMobile Engineering Support
On-site hydraulic repair, hose replacement and engineering support across Whangārei and Northland.
Read about Mobile Engineering Support
Want to see comparable work? View recent projects from Whangārei and Northland clients.
Google reviews
What customers say
5.0 out of 5 from 15 Google reviews · Verified in Google on 4 November 2026
Have used JM engineering many times fast professional services prioritizing the ergent work weather being pump rebuild, hydraulic ram repairs,welding ,hose fitting getting you back to work ! Great fast efficient team Excellent pricing back-up support.. Clearland limited
Shane MathesonGoogle review Awesome communication through out the whole build highly revommend Jordan and his team
Rhyan CaineGoogle review
Need this sorted?
For urgent or time-sensitive work, call 09 430 8070 to discuss availability.
For quotes, planned work and job photos, the enquiry form is the best path.
