Equipment performance and characteristic竊�br />1��span style="font-family: Verdana;">The crank vertically lays with compact structure;After the high frequency quenching,the crank is grinded with good smoothness and nimble rotation.The six sides of rectangular lengthen with the guide rail.The guidance surface is the bronze panel with high and precise guidance. The slide,guide rail,working platen,connecting rod,connecting set,all these key pieces are casting with resin granulated substance.Comparing with the common casting by clay granulated substance,it improves the surface roughness of 1~2 levels,enhances the size precision of 2~3 levels. This machine can produce 4 series and 10 series U type nails as well as N���� nail for sealing boxes.