Ranging from 16mm upto 76mm in different thickness. Circular Hollow Sections (CHS) are steel sections that are formed into a circular shape with hollow interiors. They are widely used in structural and mechanical applications due to their excellent strength-to-weight ratio and ability to withstand multi-directional stresses. CHS are available in a variety of diameters, thicknesses, and lengths, making them versatile for many industrial uses.