--- title: Structural & Secondary Steelwork | Koyda Ltd, Surrey url: https://www.koyda.com/services/structural-steel/ description: Structural and secondary steelwork for main contractors: beams, frames, door supports, roof plant steel and site welding across London and the South East. last_modified: 2026-10-10 publisher: Koyda Ltd, Units 27–29 Jesmor Farm, St Piers Lane, Lingfield, Surrey RH7 6PN. 07753 213617, joe@koyda.com --- Service 06 — Structural Steel # Structural and Secondary Steelwork We fabricate and install structural and secondary steelwork for main contractors on commercial, residential and refurbishment projects, and for homeowners building extensions. Service 06 / 07Structural steel scheme, Shoreditch ## What we do * Secondary steelwork: door, partition, facade and balcony supports * Roof plant and solar panel support steelwork * Structural alterations, including steel for new openings and site welding * Platforms, mezzanines, walkways and rigging steelwork * Bespoke components made with CNC technology ## How we work We take the engineer's design and produce SolidWorks models, and fabrication drawings in SolidWorks or AutoCAD, for approval before we cut steel. Structural door supports, Peninsula Hotel Performance studio rigging steelwork Cantilevered steel walkway Woodland walkway, Unilever campus, Kingston ## Related guides and sectors * [Steel section tables: UB, UC, PFC, angles, SHS, RHS and CHS sizes, with a weight calculator](https://www.koyda.com/steel-section-tables/) * [Universal beams (UB) sizes](https://www.koyda.com/steel-section-tables/universal-beams/) * [Universal columns (UC) sizes](https://www.koyda.com/steel-section-tables/universal-columns/) * [Parallel flange channels (PFC) sizes](https://www.koyda.com/steel-section-tables/parallel-flange-channels/) * [Square hollow sections (SHS) sizes](https://www.koyda.com/steel-section-tables/square-hollow-sections/) * [Guide: BS EN 1090 and execution classes](https://www.koyda.com/guides/bs-en-1090-execution-classes/) * [Guide: Specifying rooftop plant screens](https://www.koyda.com/guides/plant-screens-specification/) * [Sector: Commercial & hospitality](https://www.koyda.com/sectors/commercial/) ## Frequently asked questions What is secondary steelwork? Steel that supports building elements rather than forming the main frame, such as supports for doors, facades, balconies and plant. It usually goes in after the main frame, so an accurate survey matters. Do you design the steel connections? Responsibility is set by the contract. We can work to the engineer's connections or arrange connection design for approval, and we produce the fabrication drawings either way. Can you carry out structural alterations in occupied buildings? Yes. We size steelwork to fit through existing access and agree working methods, hot works permits and temporary works with the main contractor. Spec sheetKOY-06 Scope : Fabrication and installation Work : Secondary steel, roof plant and solar steel, structural alterations, platforms, mezzanines, walkways Drawings : SolidWorks models; fabrication drawings in SolidWorks or AutoCAD, for approval Site : Site welding; hot works permits agreed Clients : Main contractors; homeowners building extensions [Send drawings →](https://www.koyda.com/contact-us/)[Call 07753 213617](tel:+447753213617) Other services ## Other services [01Glass Balustrades](https://www.koyda.com/services/glass-balustrades/)[02Metal Balustrades & Handrails](https://www.koyda.com/services/metal-balustrades-handrails/)[03Balconies](https://www.koyda.com/services/balconies/)[04Staircases](https://www.koyda.com/services/staircases/)[05Plant Screens](https://www.koyda.com/services/plant-screens/)[07Design & Engineering](https://www.koyda.com/services/design-engineering-gateway-2-bim/)