Allerton Steel
Allerton House, Thurston Road, Northallerton, DL6 2NA
About
Allerton Steel Limited, a family-owned structural steel fabricator and installer based in Northallerton, North Yorkshire, operates from a 50,000 sq ft facility with a 10,000-tonne annual capacity, specialising in complex, large-scale heavy fabrications and precision machining. Their extensive capabilities include design, 3D modelling, CNC profiling of thick plates, submerged arc welding, and large-scale machining, handling carbon and weathering steels for single lifts up to 60 tonnes and components up to 115 tonnes. Serving sectors such as Bridges, Nuclear, Construction, Defence, Cranes, Offshore, Renewables, and Industrial Plant, Allerton Steel holds crucial certifications including CE Execution Class 4, NHSS Sector 20, RISQS accreditation, BPSS vetting, Cyber Essentials Plus, and ISO 45001. They possess approved nuclear weld procedures, experience with EEMUA and NORSOK specifications, and work with third-party surveillance organisations, offering on-site assembly and dimensional inspection.
More detail ↓Show less ↑
Allerton Steel Limited is a family-owned structural steel fabricator and installer based in Northallerton, North Yorkshire, operating from a 50,000 sq ft facility. With a significant production capacity of 10,000 tonnes per annum, the company specialises in complex, large-scale heavy fabrications and precision machining.
Their extensive capabilities include design and 3D modelling, CNC profiling of thick plates, submerged arc welding, and large-scale machining. Allerton Steel works with carbon steels (S275-S690) and weathering steels, handling single lifts up to 60 tonnes and fabricating components up to 115 tonnes and structures up to 40 metres. They serve diverse sectors such as Bridges, Nuclear, Construction, Defence, Cranes, Offshore, Renewables, and Industrial Plant.
Allerton Steel holds key certifications including CE Execution Class 4, NHSS Sector 20, and RISQS accreditation. They are BPSS vetted for defence projects and possess Cyber Essentials Plus Certification, alongside ISO 45001 for health and safety. With approved nuclear weld procedures and experience with EEMUA and NORSOK specifications, they work with third-party surveillance organisations like DNV and Lloyds, offering on-site assembly and dimensional inspection.
Verified facts— hover any value to see its source
CNC capability1
- Sub-process
- Drilling, Milling
Materials & sectors2
- Materials
- Carbon steel, Stainless steel
- Industries served
- Hydro, Nuclear, Industrial plant, Offshore
Certifications & approvals1
- ISO 9001
- Held
Welding & fabrication5
- Welding materials
- Carbon steel, Stainless
- Coded welding (any)
- Yes
- Fabrication offered
- Yes
- Fabrication sub-categories
- Structural steel
- EN 1090 EXC level
- EXC4
Services & production1
- DFM support
- Yes
31 of 41 facets not yet verified — show which
CNC capability: Specialist categories · Named machine brands · Tier-one builder presence · CAM software · Aerospace-grade CAM · CAD software · In-house design · Tolerance (typical) · Tolerance (tight) · Micro-machining · MOQ (minimum batch) · Lead time (weeks)
Certifications & approvals: ISO 14001 · AS9100 · ISO 13485 · IATF 16949 · NADCAP · Primes supplied · ITAR registered
Welding & fabrication: Welding automation
Quality & traceability: NDT methods · Part marking · Process traceability · CofC offered · Cleanroom assembly · 3D scanning · Industrial CT · In-house toolroom · FAIR capability (AS9102)
Services & production: In-house finishing · Repeat orders (Kanban / VMI)