Sigma operates wholly-owned manufacturing sites across the UK and China, managing and delivering a complete range of products from small bore rigid pipe assemblies and ducts through to complex mechanical and welded sub-assemblies.

Our experienced teams have the knowledge and commitment to deliver to exacting customer requirements, managing the whole product lifecycle and to overcome any challenges that may arise.

We constantly seek ways to improve processes, providing customers with solutions that exceed expectations through cost reduction, reduced lead-times and weight reduction.


  • Multi functional sites

  • Best practice site philosophy

  • Turnkey capability

  • In House treatments

  • Fully certified laboratory

  • NADCAP approved

  • Major OEM & 1st Tier approvals

  • Support in NPI, low & high volume