3m Mild Steel Round Bar S275 - Solid Steel Bar 8mm to 20mm

Buy our mild steel round bar in grade S275, supplied in 3m (3000mm) lengths. A solid, versatile round section ideal for fabrication, engineering, shafts, pins, balustrades, gates and general construction. Available in diameters from 8mm to 20mm, from £25.99, with cut-to-size available on request and fast UK delivery.

Sizes and Prices

All bars are solid S275 mild steel in 3m lengths. Cut to size is available on request - contact us before ordering with your required lengths.

Key Features

• Grade S275 mild steel - strong, weldable and easy to machine
• Solid round section in 3m (3000mm) lengths
• Diameters from 8mm to 20mm
• Ideal for welding, drilling, turning and fabrication
• Suitable for shafts, pins, dowels, balustrades, gates and general engineering
• Cut to size available on request

About S275 Mild Steel

S275 is a common general-purpose structural mild steel to BS EN 10025-2, valued for its strength, ductility and excellent weldability. It machines, drills and fabricates readily, making round bar a versatile choice for both structural and general engineering work.

Common Uses

Fabrication and welding projects, shafts, pins, dowels and spacers, balustrade and gate components, brackets and supports, repair and general engineering, and DIY metalwork.

Finish

Supplied in standard mill finish. The surface may show normal mill scale, handling marks or light surface oxidation typical of untreated steel. For outdoor or damp use, clean, prime and protect with a suitable coating.

Delivery Information

Lead times are currently 3-5 working days. Bars are supplied in 3m 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 diameters are available in 3m round bar?
8mm to 40mm. The 3m length is easier to handle, transport and store than 6m — ideal for workshop fabrication and smaller projects.

What grade is the 3m round bar?
S275 to BS EN 10025-2. Hot-rolled black finish with mill scale. Weldable for general fabrication.

Can 3m round bar be threaded?
Yes. S275 round bar can be threaded with hand dies or on a lathe. For precision threads, bright drawn bar (EN3B) gives a better finish.

What is 3m round bar used for?
Pins, axles, handles, brackets, gate components, balustrade spindles, spacers, machine parts and general fabrication where shorter stock is more practical.

How does 3m round bar differ from 6m?
Same grade and diameter range — just shorter. 3m fits in a standard van, is easier to handle solo and produces less waste on shorter jobs.