According to the sheet thickness and the different shape, we developed Pittsburgh lock former machine were divided into forming of 6-station, 7-station, 8-station, 9-station and 10 forms; these machines each were installed on both sides of Pittsburgh rolls on one side and a set of Standing Seam Rolls on the other side. for the realization of the use of a machine as much as possible, one of the 7-station and 8-station of lock former machine a total of 4 processing station, By adjusting the front positioning plate of 6 types of the different profile, roll these machines by high quality alloy steel by vacuum quenching system. for safety reasons, on the cover to the strict restrictions on the work table distance. In order to ensure product quality, the axial and radial roller shafts are equipped with roller bearings.