Q235B channel steel is a long strip steel with a concave channel cross-section. Channel steel is a carbon structural steel used for construction and machinery, and it is a steel section with a complex shape, specifically in the form of a channel. It is primarily used in building structures, curtain wall projects, machinery, and vehicle manufacturing. It is required to possess good welding and riveting properties as well as comprehensive mechanical properties. The raw material for producing channel steel is either carbon structural steel or low-alloy steel billets with a carbon content not exceeding 0.25%. The finished channel steel is delivered after hot working, normalization, or hot rolling.