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    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    • A part that is obsolete or no longer available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

    Engineering fabrication of custom parts and assemblies
    MIG, TIG and arc welding
    Structural and repair welding on plant and trailers
    Truck body, mount and attachment builds
    Brackets, frames, guards and pivot mounts
    Machinery and vehicle modifications
    Fabrication combined with hydraulic installation
    Field welding where safe and practical

    How the process works

    1. 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. 2

      Confirm the approach

      We agree what will be built or repaired, the materials, and a realistic timeframe before starting.

    3. 3

      Fabricate or repair

      Work is completed at the Whangārei workshop, or on site where the job allows.

    4. 4

      Fit, finish or return

      Finished parts are fitted, or handed back ready to install, with any protective finish agreed up front.

    Completed custom tanker body fit-out built and finished at the Whangārei workshop
    A completed custom tanker body fit-out, combining fabrication and hydraulic work.

    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

    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.