the machlnes are used for punching shear the cold crimped engine bed with the thickness of 1.2- 2.5mm the width of 2000mm material strength of 450n/mm2the specifications of punching shear are su~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 su rpasses 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. expanded metal pattern mesh we have been engaged in producing and selling of expanded metal mesh for over 10 years. expanded metal mesh can be made from a wide range of materials, chiefly expanded steel mesh, aluminum expanded metal mesh, expanded stainless steel, expanded nickel and other metal , as steel reinforcement materials in petroleum, chemical industry and building decorations. thickness available from 0.5mm to 8mm. uses of expanded metal mesh: fencing for road, railway, civil building, water conservancy's construction; protecting of all kinds of machines, electrical equipment, window and aquatic product's breeding. we have advanced equipment like various expanded metal mesh punching machine, mesh flattening machine and mesh cutting machinery to produce quality expanded metal products.