WNS Pittsburgh Lock Formers / Rollformers are principally used for joining sheet metal on duct sections with the traditional pittsburgh lock profile. The ‘lock’ is formed in one pass and a flange is inserted into the pocket. These machines are available in 16swg (1.6mm),18swg (1.2mm) and 20swg (1.0mm) capacities. WNS Button Punch Snap Lock Rollformers are 20swg (1.0mm) capacity machines. These machines produce a flange and punched louvers and the duct is ‘snapped’ together. WNS Flat ‘S’ Cleat Rollformers have drive cleat rolls fitted inboard. Duct is joined longitudinally in conjunction with drive cleat and plain seam.
Our Rollformers are manufactured to the original & traditional Lockformer design which ensures industry standard sized joints and locks. All shafts, forming/auxiliary rolls, gears and guides are hardened, and needle bearings are fitted throughout.