Roll forming is a continuous bending operation in which a long strip of metal (typically coiled steel) is passed through consecutive sets of rolls, or stands, each performing only an incremental part of the bend, until the desired cross-section profile is obtained. Roll forming is ideal for producing parts with long lengths or in large quantities.

Examples of roll formed products include bicycle rims, fenders, precipitator panels, door frames, auto trim, fence posts, auto bumpers, step-beam members, and even flux core rod.