C purlin machine

C purlin machine of apparatus is used to form components, such as C purlin machine and Z purlin machine cross-sections from sheets of planar material. It is provided with a plurality of roll-forming stations adapted to form the first and the second components each of which has a C-shaped cross section with a center portion and a pair of legs connected to the center portion. Where the legs of the first component have a first length and the legs of the second component have a second length different than the first length. The roll-forming stations include a first roll-forming station having a plurality of forming rolls and a second roll-forming station for forming the legs of the first and second components. The second roll-forming station has a first pair of forming rolls, a second pair of forming rolls, and a mechanism for supporting the pairs of forming rolls. For adjusting the position of the pairs of forming rolls from a first position in which the second pair of forming rolls make contact with a portion of the first component to a second position in which the second pair of forming rolls make contact with a portion of the second component.