QA Weld Tech Ltd
Direct employees
Turnover (reported)
Regional Markets
Asia, Africa, Australia, Europe, North America, South America
Nuclear Contracting Tiers
Tier 4: Sub-component Suppliers/Distributors
Tier 5: Processors & Fabricators


  • ASME
  • ISO 14001:2015
  • ISO 9001:2008
  • OHSAS 18001

F4N Case Studies

QA Weld Tech Ltd

Steel Fabrications

Pipework of all sizes in carbon, Stainless steels and high performance alloys. Weld overlay, precision CNC machining and pressure testing.


Specialist Welding & Engineering company delivering high integrity pipework and fabrications for severe service applications in the Oil & Gas, Power Generation, Marine and Nuclear industries. From our manufacturing facility in Middlesbrough, UK we supply clients Worldwide, offering a turnkey service, on-time and on-budget.

We have developed over 650 fully approved welding procedures covering the MIG, TIG, MMA and SAW processes for our specialist welding and fabrication. These welding procedures have been developed by our welding engineering team comprising European Welding Engineers, Technicians and Inspectors.

Our extensive operational capabilities and experience cover a wide scope of welding engineering practices and we are approved to ISO 3834 Part 2 (Quality requirements for fusion welding of metallic materials), and by ASME for the weld overlay and supply of components requiring both Div1 U and Div2 U2 stamps. Our extensive experience of weld overlay using corrosion resistant alloys coupled with our Fronius hot wire TIG cladding technology allows maximum flexibility for overlay welding in bores or on the outside of cylindrical parts.

Valve bodies and parts with difficult geometries can be accommodated on our ETR (endless torch rotation) system. Pipe diameters between 150mm and 900mm and lengths up to 12m can be handled by our twin-head pipe cladding rigs.

With a range of configurable workshop areas, we can accommodate a variety of projects, with ample lay down areas and overhead craneage. Individual bespoke fabrications including skid units, storage vessels, deck equipment and oil tool components are produced by our highly skilled team of fabricators, for a wide range of industries including power generation, oil & gas, marine, pharmaceutical and nuclear.

A “clean condition” segregated fabrication area ensures that the stainless and high nickel alloys are separate from carbon and low alloy steels, while our adjustable jig fabrication system ensures dimensionally critical items can be assembled to exacting tolerances. We are well recognised for the quality of our high integrity pipework, ranging from heavy wall Carbon Steel through a full range of Duplexes and Alloy 625 and can produce flowbends, pipespools and chemical injection systems either individually or in project quantities.

We are able to manage the whole process, from procurement of project specific materials, bending, welding & fabrication, through to in-house pressure testing and coating. Completed fabrications are packed and protected to ensure arrival at the destination site in the same condition as dispatched, wherever that may be in the world.

Products and Services

Product Sector
Fabrication Med-integrity Structures Oil & Gas including LNG
Fabrication Hi-integrity & Complex Structures including Heavy Oil & Gas including LNG
Specialist Services & Processes including Engineering Manufacturing Design & Testing Oil & Gas including LNG
Pipework Fittings & Spools Oil & Gas including LNG
Pressure Vessels Heat Exchangers & Tanks including Internals Oil & Gas including LNG
Materials Tubing & Pipework Subseas and Offshore
Welding & Welding Systems Oil & Gas including LNG
Fabrication Med-integrity Structures Oil & Gas including LNG
Precision & General Machining Subseas and Offshore
Inspection Equipments & Services including NDE & Surveillance Oil & Gas including LNG
Materials Tubing & Pipework Subseas and Offshore
Welding & Welding Systems Oil & Gas including LNG

Site Facilities

Shop Floor

5000m2 Clean conditions welding shop and 5 and 10 tonne overhead cranes.

Specialist Machinery

Capability Swing Length Width Weight
3 Axis MillingMid-to-large-sized Heavy Duty Machining Centre Min: - - - N/A
Max: - 1400mm 670mm -
Horizontal Turning (CNC)24" Powerful Large-sized Heavy Duty Turning Centre Min: - - - N/A
Max: - 3000mm 900mm -
Vertical Turning (Conventional)24" High-productivity Vertical Turning Centre Min: - - - N/A
Max: - - 900mm -

Welding & Cladding

Capability Swing Length Width
Electroslag Strip Cladding (ESSC) Min: - - -
Max: - - -
Gas Tungsten Arc Welding (GTAW) Min: - - -
Max: - - -
Manual Metal Arc Welding (MMA) Min: - - -
Max: - - -
Metal Inert Gas Welding (MIG) Min: - - -
Max: - - -
Narrow Gap Welding (GTAW or SAW) Min: - - -
Max: - - -
Submerged Arc Strip Cladding (SASC) Min: - - -
Max: - - -
Submerged Arc Welding (SAW) Min: - - -
Max: - - -

Inspection / Testing

  • Clean room facilities
  • CMM machines
  • Non destructive testing - Magnetic Partical
  • Non destructive testing - Radiography
  • Non destructive testing - Ultrasonic
  • Pressure / Hydro Testing

Recent Work

F22 Multibore Hubs

F22 Multibore hubs, weld clad through bore and buttered with Alloy 62, machining in-house, being assembled onto 22mm w.t X65 10" pipe.

F22 Multibore Hubs

'Y' Piece cladding

Intersection of 16" & 10" bore of 'Y' piece clad with Alloy 625 on Fronius ETR (Endless Torch Rotation) rig.

'Y' Piece cladding

Twin head pipe cladding rig

Through bore weld overlay using Alloy 625 on one of our computer-controlled twin head Fronius pipecladding rigs.

Twin head pipe cladding rig

Weld overlay on door seals

Alloy 625 overlay on pressure vessel door seals.

Weld overlay on door seals

Super Duplex Flowbends

Assembly of Super Duplex flowbends in clean conditions shop

Super Duplex Flowbends