Galvanised Steel Square Bar 6m - Solid Bar 12mm to 20mm

Buy our galvanised steel square bar in full 6m lengths - a solid mild steel square section with a protective hot-dip zinc coating for excellent corrosion resistance, ideal for outdoor fabrication, fencing, gates, frames, brackets and general construction. Available in sizes from £43.99, with cut-to-size available on request and fast UK delivery.

Sizes and Prices

All bars are solid galvanised mild steel in 6m lengths. Cut to size is available on request - contact us before ordering with your required lengths.

Key Features

• Solid mild steel square bar with hot-dip galvanised zinc coating
• Excellent corrosion resistance - ideal for outdoor and exposed use
• Solid square section in full 6m lengths
• Sizes from 12mm to 20mm
• Weldable and fabricable (re-protect any cut or welded areas)
• Cut to size available on request

About Galvanised Steel

Galvanised steel is mild steel coated in a layer of zinc by hot-dip galvanising, which protects the steel beneath 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 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

Fencing and gates, outdoor frames and structures, brackets and supports, agricultural and equestrian fabrication, balustrade components, and general construction where corrosion resistance is required.

Delivery Information

Lead times are currently 3-5 working days. Bars are 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.

Frequently Asked Questions

What sizes of galvanised square bar are available?
12mm upwards in 6m lengths. Check the product page for the full range.

What is galvanised square bar used for?
Outdoor gate and railing infill, balustrade spindles for external use, fence components, agricultural frames and any outdoor fabrication requiring corrosion-resistant square bar.

Can galvanised square bar be bent?
Yes, though the zinc coating may crack on tight bends. Touch up any cracked areas with zinc-rich paint to maintain corrosion protection.

How does galvanised square bar compare to stainless steel?
Galvanised is significantly cheaper than stainless and suits most outdoor UK applications. Stainless is needed for coastal, marine, food-grade or architectural applications where the zinc finish is not suitable.

What finish is supplied?
Hot-dip galvanised — a bright spangled zinc surface. The appearance dulls to a matte grey over time as the zinc weathers, which is normal.