Rigid pipe assemblies are used extensively in aircraft fluid systems to transfer oil, fuel and air throughout the airframe and engines.

Sigma’s manufacturing capabilities include the production of pipe assembly bends to 1D, up to 75mm in diameter, in a range of stainless steel, aluminium, titanium and high-temperature alloys.

End fittings for tube assemblies are manually or automatically TIG welded or torch brazed and inspected using in-house NADCAP approved x-ray and NDT facilities.

Pipe end fittings are supplied through Sigma’s comprehensive in-house machining facilities in the UK and China, meaning we’re able to respond quickly to customer needs.

We also design, manufacture and calibrate assembly and inspection fixtures for pipe assemblies.


  • Capability over 4 sites in the UK & China

  • All electric and hydraulic machines x 14

  • Full CMM measurement capability

  • Fully NADCAP approved

  • NPI, High & Low Volume