Every Airframe requires a wide range of fluid conveyance systems to support the functionality of the Aircraft, including hydraulics, fuel, pneumatics, water and waste. 

We have significant experience supplying Rigid Pipe assemblies to many ATA Chapters and many well-known civil and military aircraft programmes.

Our manufacturing capabilities include pipe assemblies with 1D bends and diameters ranging from 4mm to 75mm, in a range of stainless steel, aluminium, titanium and high-temperature alloys. Sigma supplies all types of pipe assemblies, from simple bent tubes with swaged fittings to complex pipe configurations with intricate welded machined end fittings.

The majority of the machined end fittings and associated fixtures are supplied through Sigma’s comprehensive in-house machining facilities within the UK and China, allowing us to respond quickly to customer needs.


  • Beading & Flaring
  • CMM, AICON lightbox, Laser Scanner
  • Dye Penetrant Inspection
  • Electrical Bond Testing
  • Induction Brazing
  • Manual TIG Welding
  • Multi-Site Capability
  • Orbital Welding
  • Pressure Test (Air 250 psi, Water/Oil 18,000 psi)
  • Rapid New Product Introduction Processes
  • Robotic Welding
  • Small to Large Bore Bending
  • Swaging (Gamma, Harrison, Permaswage, Wiggins, Hydroflow, Roller)
  • Torch Brazing
  • X-Ray Inspection
  • Supported by: Full Nadcap Approval, in-house laboratory and Level 3 technicians, in-house treatments, fixture design & manufacture


  • Anti-ice Tubes
  • Drain Tubes
  • Dual Wall Pipes
  • Fuel Pipes
  • Heating Coils
  • Hydraulic Pipes
  • Oxygen Pipes
  • Piccolo Tubes
  • Pneumatic Pipes
  • Spray Pipes
  • Vent Pipes
  • Water & Waste Pipes