18mm Round Bar is a circular shaped solid steel bars which can be used in all manner of construction and fabrication applications. At THE METAL WAREHOUSE we stock a wide range of mild steel round bars in 300 grade mild steel. The majority of steel round bars will be hot rolled mill finish; this is a relatively low tolerance coarse finish bar with mill scale. Common Uses: - Screens – Grates & Pits – Pins & Axles – Trailers & Truck Bodies – Rustic Furniture & Much More