Allied International UK Ltd
Direct employees
Turnover (reported)
Regional Markets
Asia, Africa, Antarctica, Australia, Europe, North America, South America
Nuclear Contracting Tiers
Tier 5: Processors & Fabricators
Tier 4: Sub-component Suppliers/Distributors
Tier 3: Original Equipment Manufacturing Organisations


  • ANSI
  • ASME
  • ISO 14001:2015
  • ISO 9001:2008
  • OHSAS 18001
  • RCC-E
  • RCC-M

Allied International UK Ltd

Material Supplier

Heavy Fabrications - Fittings and Sections


Part of the international Allied Group of Companies, Allied UK Ltd are one of the largest manufacturers and stockholders in the UK and worldwide of linepipe, fittings, flanges and associated products in carbon, stainless, duplex and alloy steels. Allied have been supplying into the nuclear sector for many years now and are supported by the many manufacturing facilities in Italy, who also have RCC-M approval.

Products and Services

Product Sector
Precision & General Machining Oil & Gas including LNG
Pipework Fittings & Spools Oil & Gas including LNG
Materials Tubing & Pipework Oil & Gas including LNG
Materials Tubing & Pipework Oil & Gas including LNG

Site Facilities

Shop Floor


Inspection / Testing

  • Advanced testing facilities
  • Clean room facilities
  • Equipment Qualification
  • Non destructive testing - Magnetic Partical
  • Non destructive testing - Radiography
  • Non destructive testing - Ultrasonic


  • CAD Design - 2D
  • CAD Design - 3D

Recent Work

Sellafield Box Encapulation Project

Major contract of project supply of stainless and carbon pipes, fittings and flanges to Sellafield specifications under BEP conditions from 3/4" up to 8" diameter in seamless condition.