From single line items to Direct Line Feed and high volume kits, at Sigma, we actively support aerospace customers with detail parts.

Our extensive range of sheet detail processes includes high-speed CNC twin-headed routers, CNC punches, CNC press brakes and dual action 250 tonne presses.

All heat treatment, chemical cleaning, surface treatments, Non Destructive Testing and associated laboratory work is managed in-house, meaning we are able to closely manage all supporting elements, delivering greater lead time control for our customers.

We also manufacture a variety of aircraft sub-assemblies, ranging from simplistic, riveted types to complex mechanical assemblies incorporating welded structures.

Our customers benefit from access to an experienced team that can manage the whole product lifecycle: from our world-class New Product Introduction capability through to volume production and aftermarket spares. By making the most of our wholly-owned UK and Chinese manufacturing facilities, our customers can rest assured of the very best value at every stage.


  • Passivation

  • Anodise, prime and top coat

  • Shot blasting

  • Oxygen cleaning