Fabrication of Air Rings

Fabrication of Air Rings


Thistle Fabrication Pty Ltd were successful in winning a rigorous tender process to manufacture the air rings for our client

Scope of Work:

  • Supply of all materials (A106 GrB, 800H, 321H and 304H) including induction bends, fabrication & welding to ASME B31.3, non-destructive testing, installation of over 10,000 refractory anchors and drying of components upon successful completion of refractory installation.
  • Drilling and prepping of over 200 hundred x 50mm diameter holes set symmetrically around the inner and outer circumference of the rings to accept 40NB pipe full penetration welding.


  • Aligning and maintaining induction bends to tight tolerances
  • Manufacture of layout table and alignment jig to machine, prepare and installation of over 200 nozzles keeping each nozzle within the angle and dimensional tolerance.
  • Loading and transport of finished product to client’s premises to allow safe loading and unloading.


  • No injury or harm to personnel
  • Controlled manufacture and welding eliminating potential for distortion occurring during fabrication process
  • No Non-Destructive Testing repairs
  • Delivery of successfully completed works as per agreed client requirements
Fabrication of Air Rings