Performance Features The pittsburgh lock forming machine is one of the essential machinery in the air duct manufacturing industry,it can be used to process various bone shapes of different shapes, which can meet the needs of various thin plate occlusions,splicing and corner welding,universal models can be machined plates from 0.5 to 1.5mm thick galvanized sheet,the enterprise can be made seven special launch boneshaped machine,adding a single flat function on the basis of the original six functions to facilitate the customer's use,improve efficiency,special models are to meet customer specific needs. 1) This machine is a specialized equipment for processing various square and rectangular ventilation ducts. The lock forming machine produced by our factory has a model from SA12 to SA15HB. The thickness of the formed steel plate ranges from 0.5 to 1.5mm. 2) This machine has the characteristics of small size, light weight, convenient movement, and simple and reliable operation, especially suitable for on-site processing of exhaust pipes in industries, enterprises, hotels, and shopping malls. 3) Using instance diagrams.