Channel steel is a long strip steel with a groove-shaped cross-section, belonging to carbon structural steel used in construction and machinery. It is a type of steel with a complex section, characterized by a groove shape. Channel steel is mainly used in building structures, curtain wall projects, machinery and equipment, and vehicle manufacturing.

Channel steel is divided into standard and light channel steel. The specifications for hot-rolled standard channel steel range from 5# to 40#. The specifications for hot-rolled modified channel steel, supplied upon agreement between both parties, range from 6.5# to 30#. Channel steel is often used in conjunction with I-beams. Channel steel can also be categorized into four shapes: cold-formed equal-width channel steel, cold-formed unequal-width channel steel, cold-formed inward curled edge channel steel, and cold-formed outward curled edge channel steel.

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