Expanded Metal Machine The machines are used for punching shear for cold crimped engine bed with the thickness of 1.2- 2.5mm the width of 2000mm Material strength of 450N/mm2, The specifications of punching shear are sur eyed by the bit of TB5-20 mesh grid plate: if the TB TL are changed the punching shear knife is also changed: TB.TL are increased. the punching shear strength is reduced: TB.TL are reduced. the punching shear strength is increased In order not to damage components for the excess load The nominal tonnage is 63T lf TB TL are reduced the punching shear strength surpasses the nominal tonnage. you can reduce the material thickness and width. The machines are used for punching all kinds of expand plate mesh in construction. common hardware,window and door,machine protecting etc.