It is perforated as per the die and is advanced by the amount of the perforated pitch set on the machine Perforated metal mesh 1.material:ss201,304,410,316,Al,gl sheet 2.aperture:0.5-500mm 3.use: filter, chair,machine parts Manufacturing process and product features : There are punched by punching machine. Our products have the features:1.rational structure 2.holes are uniform 3.durable and ...