Cold Roll-Formed Steel Sections

Cold-rolled steel sections are typically produced in thicknesses ranging from 1.2 mm to 3.2 mm, depending on the profile type and structural requirement. Heavier sections (up to 4 mm) can be manufactured for specific load-bearing applications.

Because cold-rolling is performed at room temperature, the process achieves tighter dimensional control than hot-rolled steel. Standards such as BS EN 10162 (equivalent to DIN EN 10162) define acceptable tolerances for thickness, width, length, straightness, and cross-sectional geometry.

At NW Metal Sections, we maintain these tolerances to ensure every C section, Z purlin, or top-hat profile fits precisely within modular systems and structural assemblies, typically within ±0.25 mm on thickness and ±1 mm on width, depending on the gauge and material grade.

Yes, cold-rolled steel is suitable for welding, bolting, and other joining techniques. However, because the material can have higher stress levels from forming, proper welding procedures, pre-heating (if needed), and stress relief should be considered.
If you’re using our cold-rolled profiles (C sections, top hats, hollow sections), we can provide guidance on best practices to maintain structural integrity after joining.

Cold-rolled steel is formed at or near room temperature (below the recrystallisation point). It typically offers better strength by strain hardening, smoother surface finish, and greater dimensional accuracy compared with hot-rolled steel (which is formed at high temperature).