Buy our galvanised mild steel flat bar in full 6m lengths - a solid flat steel section — also called galvanised flat bar or galv flat steel bar — with a protective hot-dip zinc coating for excellent corrosion resistance, ideal for outdoor brackets, supports, frames, fencing, gates and general fabrication. Available cut to size on request with fast UK delivery.
Galvanised Flat Bar Sizes & Weight Chart
Galvanised mild steel flat bar size chart with weight per metre (bare steel, before galvanising). All bar in 6m lengths or cut to size.
| Size (width x thickness) | Weight (kg/m) |
|---|---|
| 20 x 3mm | 0.47 |
| 25 x 5mm | 0.98 |
| 30 x 5mm | 1.18 |
| 40 x 5mm | 1.57 |
| 40 x 8mm | 2.51 |
| 50 x 5mm | 1.96 |
| 50 x 10mm | 3.92 |
| 80 x 3mm | 1.88 |
| 100 x 6mm | 4.71 |
| 150 x 6mm | 7.06 |
Popular galvanised flat bar sizes include 20x3, 25x5, 40x5 and 50x5 galvanised flat bar for outdoor brackets and fencing, up to 100mm and 150mm wide galvanised flat bar. Weights are nominal mass per metre before galvanising — for any size use our metal weight calculator.
Rackerman is a UK steel supplier: buy galvanised steel flat bar — also known as galvanised flat bar, galv flat bar or zinc-coated flat steel bar — online with fast mainland UK delivery and cut-to-size service, a convenient alternative to a local steel stockholder near you.
Key Features
- Solid mild steel flat bar with hot-dip galvanised zinc coating
- Excellent corrosion resistance - ideal for outdoor and exposed use
- Full 6m lengths, cut to size on request
- Widths from 20mm to 150mm in various thicknesses
- Weldable and drillable (re-protect any cut or welded areas)
About Galvanised Steel
Galvanised steel is mild steel coated in zinc by hot-dip galvanising, protecting the steel from rust and corrosion. This makes it well suited to outdoor, damp and exposed applications where untreated mild steel would corrode. The bar can be welded, drilled and cut, though any cut ends or welded areas should be re-protected with a suitable zinc-rich paint to maintain corrosion resistance.
Common Uses
Outdoor brackets and supports, fencing and gate components, frames and structures, agricultural and equestrian fabrication, fixing strips and packers, and general construction where corrosion resistance is required.
Compare Our Flat Bar Range
Choose the right flat bar for the job: mild steel flat bar for general fabrication, galvanised flat bar for outdoor and corrosion resistance, and lightweight 6063 aluminium flat bar for trims and marine work. See more in our galvanised steel guide.
Delivery Information
Lead times are currently 3-5 working days. Bar is supplied in 6m lengths, so suitable delivery access is required. If your order is long or heavy, please ensure someone is available to help with offloading on arrival.