Buy our mild steel round bar in grade S275, supplied in easy-handling 3m (3000mm) lengths — also called round steel bar or round rod. A solid, versatile round section ideal for fabrication, engineering, shafts, pins, balustrades, gates and general construction, in diameters from 8mm to 20mm, with cut-to-size on request and fast UK delivery. The short 3m length fits in a car or van and is easier to handle than a full 6m bar.
3m Mild Steel Round Bar Sizes & Weight Chart
S275 mild steel round bar size chart with weight per metre. All bar in 3m lengths or cut to size.
| Diameter | Weight (kg/m) |
|---|---|
| 8mm | 0.39 |
| 10mm | 0.62 |
| 12mm | 0.89 |
| 14mm | 1.21 |
| 16mm | 1.58 |
| 20mm | 2.47 |
Popular sizes are 8mm, 10mm, 12mm and 20mm round bar for shafts, pins and balustrades. Weights are calculated from the section dimensions — for any size use our metal weight calculator.
Rackerman is a UK steel supplier: buy 3m mild steel round bar — short round steel bar, steel round rod or metal round bar — online with fast mainland UK delivery and cut-to-size service, a convenient alternative to a local steel stockholder near you.
Key Features
- Grade S275 mild steel - strong, weldable and easy to machine
- Solid round section in short, van-friendly 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.
Compare Our Round Bar Range
Choose the right round bar for the job: the full 6m S275 mild steel round bar for larger sizes, this 3m round bar for easy handling, bright EN3B round bar for machining, 6063 aluminium round bar for light weight and 304 stainless steel round bar for corrosion resistance.
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.