The important thing about a roll form is that

by:JPSK     2020-08-21

Specialized machinery converts these forms into more particular roll forms to get the desired cross section. Due to the presence of 'blow holes' cold forming is necessary rather than shaping or hot rolling the metal directly to the desired shape. Blow holes are basically packets of air trapped inside steel that makes the metal brittle and liable to crack under stress. Blow holes can be removed during hot rolling but cold rolling ensures complete removal. Once the metal is cool it is free from all inconsistencies. These rolls can be then sent for further rolling. Then the roll form can be bent or re-cut to perfection.

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