Standing and Angular seams on prefabricated sheetmetal assembly parts such as roof coverings, heating and air-conditioning ducts or car body components are pressed together and sealed by hammering. This free-standing tool allows work to be performed even into tight corners.

The Pittsburgh lock seam is the ideal seam joint for connecting straight or curved sheetmetal parts with pre-formed edges. Pittsburgh lock seams provide smooth and aesthetic connections without the need for additional fastening elements.

Trumpf Seam Lockers close Pittsburgh seams in an automatic, rolling operation. Automatic feed control of the Machine guarantees consistent seam quality.