Transmission & Distribution
(OHL Fabrication)
Overhead line specialists
Our transmission and distribution fabrication services support overhead line infrastructure, substations and wider power network projects. We manufacture durable steel components for OHL applications, helping contractors and utilities deliver reliable electrical connections. With accurate fabrication, dependable materials and sector knowledge, we support critical UK energy infrastructure projects.
BS EN 1090
Certified to BS EN 1090-1:2009+A1:2011 Execution Class 3 as per BS EN 1090-2:2018
30+ Years
Years supplying the industry with trusted structural steel fabrication and installation excellence
Workforce
Welding Quality Management System (WQMS) accredited by ISOQAR, approved to BS EN 1090 EXC 3.
UK-Wide
Site erection coverage across the United Kingdom with full project management support
OHL fabrication
OHL fabrication for the UK transmission and distribution network.
Our transmission and distribution fabrication services support overhead line infrastructure, substations and wider power network projects — durable, accurate and aligned to National Grid TS and ENA Engineering Recommendations.
Capability
What we
deliver.
From National Grid TS and ENA-aligned engineering through coded welding and hot-dip galvanising — every OHL fabrication is workshop trial-fitted, identification stamped and delivered to possession-window programmes.
Phase 01
Specification-led engineering
Fabrication drawings produced to National Grid TS, ENA Engineering Recommendations and the bespoke specs of UK DNOs and IDNOs — conductor tensions, ice loads and short-circuit forces modelled.
- National Grid TS
- ENA ERs
- DNO bespoke specs
- Load cases modelled
Phase 02
Workshop fabrication
Strain supports, line terminations, cross-arms, anti-climb steel and substation interfaces — cut, drilled and welded in workshop, then trial-fitted before despatch.
- Strain & line supports
- Cross-arms & anti-climb
- Workshop drilled
- Trial-fitted
Phase 03
Galvanised and identified
Hot-dip galvanised to BS EN ISO 1461 with identification stamps applied pre-galvanising, plus duplex paint systems where specified.
- BS EN ISO 1461
- ID stamps pre-galv
- Duplex paint optional
- Bolt packs supplied
Phase 04
Programme-critical delivery
Loads sequenced to possession windows with Hiab offload at remote line sites, marked delivery notes and direct liaison with site management.
- Possession-window delivery
- Hiab at remote sites
- Marked delivery notes
- Direct site liaison
OHL fabrication for the UK transmission and distribution network
Our Ethos
Specification-led
- National Grid TS and ENA ERs followed
- DNO and IDNO bespoke specs as required
- Conductor tensions and ice loads modelled
- Short-circuit forces designed in
Workshop fabrication
- EXC 3 fabrication on every order
- Coded welders on every joint
- Bolt holes drilled in workshop, not on site
- Workshop trial-fitted before despatch
Galvanised and identified
- Hot-dip galvanising to BS EN ISO 1461
- Identification stamps applied pre-galvanising
- Duplex paint systems where specified
- Bolt packs supplied per fabrication
Programme-critical delivery
- Loads sequenced to possession windows
- Hiab offload at remote line sites
- Marked delivery notes and orientation
- Direct liaison with site management
Accreditations
Quality you can
prove anytime.
Every job leaves our facility with full documentation — mill certificates, weld records, inspection reports, CE / UKCA declarations and delivery notes.
- BS EN 1090 EXC 3
- BS EN 9606-1 Coded Welders
- ISOQAR Accredited WQMS
- UKCA Marking
- ISO 9001 Quality
- CE Marked Fabrication
More Substation Steelwork
Explore related substation steelwork.
OHL fabrication sits within a complete substation and grid product range — supports, gantries, platforms and GIS buildings. Explore the related substation products engineered for the UK transmission and distribution network.
Galvanized substation steel
Galvanized Steel Substation Support Structures
Galvanised steel substation support structures designed for strength, durability and long-term performance across the UK energy sector.
Aluminium substation steel
Aluminium Substation Support Structures
Lightweight, corrosion-resistant aluminium substation support structures for utilities, contractors and energy providers across the UK power sector.
Gantries & supports
Gantries, Masts & Girders
Gantries, masts and girders fabricated for substation, transmission and electrical infrastructure projects across the UK energy sector.
Access & maintenance
Steel & GRP Platforms
Steel and GRP platforms for safe access, inspection and maintenance across UK substations and electrical infrastructure sites.
Gas insulated switchgear
GIS Buildings
Robust GIS buildings designed to house and protect gas insulated switchgear installations across the UK energy sector.
OHL fabrication
Transmission & distribution overhead line fabrication
Overhead line structural steel fabrication for transmission and distribution projects across the UK — strain supports, line terminations, cross-arms, anti-climb steel and substation interface fabrications, engineered to National Grid TS and ENA Engineering Recommendations.
From 11 kV distribution through 400 kV transmission, every fabrication is workshop trial-fitted, identification stamped, hot-dip galvanised and delivered to possession-window programmes.
Specification-led engineering
DNO and IDNO bespoke specs are translated into fabrication-ready drawings by our in-house engineers, with every assembly traceable from heat number to installed location.
Programme-critical delivery
Loads are sequenced to possession windows with Hiab offload at remote line sites — co-ordinated by our UK steel delivery team.
FAQs
Transmission &
distribution OHL.
Overhead line fabrication for transmission, distribution, substation interfaces and wider UK power network projects.
- Strain and suspension fittings supports, line termination steelwork, gantry interfaces, cross-arms, anti-climb steel and substation interface fabrications for transmission and distribution overhead lines.
Ready to build