IMG design, fabricate and machine a variety of heavy industry mechanical components, structural steelwork, specialist structural beams, piping systems (coded), tanks, process modules, chutes and hoppers.


Our workshops are strategically located, in close proximity to some of the largest heavy industrial plants in New Zealand.


Whatever the job, you’ll find our fast turnaround reduces your downtime and keeps your operations running smoothly.


We work with all ferrous and non-ferrous materials from mild steel through to aluminium, copper and duplex stainless steels. Our team of welders have expertise in exotic welding, especially working with high temperature alloys such as 253MA and High Nickel Alloy 601. We are New Zealand’s Premier Heavy Industry, High Temp, Stainless Steel Fabrication Specialists.

General Welding

Our welding department, serviced by a 7.5 tonne overhead crane and purpose built WAG multi-surfacer, undertakes an extensive range of repair, maintenance and production welding.


Staff are certified to AS/NZS2980 and have access to all modern and less common welding processes, enabling them to choose the most cost effective method for the job.


We have sophisticated profiling, cutting and punching machines to fabricate metal components before they are welded. Technical knowledge is continuously updated through our close association with the Heavy Engineering Research Association, the Marine Division of the Ministry of Transport and welding consumable manufacturers and suppliers.



  • Specialists in structural steel, stainless steel, welding and fabrication.
  • Mig, Tig and stick processes.
  • Plant fabrications and maintenance.
  • Mobile site welding services.
  • Truck tray, chassis and heavy plant and equipment repairs.
  • R.O.P.S fabrication and installation service.
  • Shut down and maintenance work.
  • Staff certified to AS/NZS2980in MWAW and FCAW welding processes.
Specialised Welding
  • Stud welding machine to weld 19mm refractory studs welded to kiln inner.
  • Automated welding machine capable of sub arc, open arc and gas shielded welding.
  • Exotic Welding
  • Roller reclamation.
Structure Mechanical Piping (SMP)

We pride ourselves on delivering complex piping solutions across some of the most challenging industrial environments. These include;

  • Carbon steel, chrome moly, stainless steel
  • Coded piping (ASME B31.3 & B31.1, ASME IX, AS/NZS 2885)
  • Tubing
  • Hydraulic
  • Instrument tubing
  • In-house CBIP inspectors
  • Sophisticated QA / QC processes and documentation
  • Welder qualification AS/NZS 2980


Truck Casings smaller size