The airframe structure is made up of millions of constituent parts designed to withstand aerodynamic forces and imposed stresses. At Sigma, we manufacture a comprehensive range of welded and mechanical airframe fabrications & sub-assemblies, from small filters and large heat shields to firewalls, track cans and wingtips. Our scope of welding options also includes oxy-acetylene, roll spot & seam and hand TIG, as well as bench, jig and wet assembly.


  • Aluminium Welding
  • Hand TIG Welding
  • Oxy-Acetylene Welding
  • Roll Spot & Seam Welding
  • Titanium Inert Gas Welding (Chambers)
  • Bend & Jig Assembly
  • Welded & Mechanical Assemblies
  • Wet Assembly
Airframe Fabrications & Sub-Assemblies

Sigma’s highly skilled coppersmiths and fitters have the tools and techniques to produce an extensive range of fabrications, whether for intricate airframe fabrications or standard sub-assemblies. Our teams also work with a wide range of materials, including aluminium alloys and stainless steels to titanium, Nimonic alloys and Inconel, to deliver precisely fabricated, high-quality assemblies to our aerospace customers.


  • Anti-ice Assemblies
  • Diffusers
  • Electrical Ladders
  • Exhausts
  • Firewalls
  • Fuel Filters & Strainers
  • Light Surrounds
  • Plenum Chambers & Vent Tanks
  • Pressure Bulkhead Assemblies
  • Tie Rods
  • Track Cans & Wing Tips
  • Airframe Fabrications & Sub-Assemblies
  • Airframe Fabrications & Sub-Assemblies
  • Airframe Fabrications & Sub-Assemblies

In addition to being Nadcap approved, our fully accredited in-house laboratory and level 3 technicians perform various procedures, including electrical bond testing.

Contact Sigma

For more information or to find out how Sigma can work with you to meet your airframe fabrication & sub-assembly requirements, please contact our sales team.