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GJ Welding is owned and operated by Graham Johnson, out of South Island New Zealand.  We have extensive experience in welding and fabrication disciplines, serving a variety of industries.

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We are all about quality, and delivering the best possible outcomes for our clients.

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Home: About
Home: About
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Services

GJ Welding provides mobile welding services New Zealand wide.

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We serve a wide range of industries including:

  • Commercial & Civil construction

  • Timber treatment & processing 

  • Oil & gas

  • Heavy equipment

  • Agricultural

  • Conservation

  • Food & Beverage

  • Residential construction

Our focus:​

  • Pipe welding & fabrication​​

  • ​Structural welding & erection

  • Vessel maintenance & repair

  • sShutdowns 

  • Equipment repair


Current Certifications:​

  • ASME IX​​​

  • AS/NZ 2980



We have the capacity to develop and qualify welding procedures specific to the requirements of your job

heavy wall pile splicing
Carbomn pipe fab
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pre fab
CCA chemical valves & lines
Pile splicing with Pico eng
6" steam spool
Installation of bypass
Steam lines
tie ins
Vessel shell repair
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6" steam spool
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Fabbing carbon pipe spools for Xpole, Cromwell NZ
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vessel sample extraction and patching
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stainless riser replacements for PanPac
Stainless pipe work at t he sawmill
Carbon pipe fab
Bevelling pile casings
Carbon pipe fab
Extracting samples from an out of service vessel
splicing pile casings
Bevelling pile casings
Long lining material into the job site
carbon-inconel spool
Flying Aviary prefab
low temp water lines
Piles on Piles
Capped out pile
steam line spool
Stainless fab at PanPac

 021 235 2404

Contact us with queries about welding requirements for your next project.


We are based in the Dunedin area of  Otago NZ

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