... amount of the perforated pitch set on the machine Perforated metal mesh 1.material:ss201,304,410,316,Al,gl sheet ... , protruding(fish scale), rhombus, hexagonal, vertical crossing, plum blossom and leaf, etc. Using: On the filtration of auto gas engine, filtration ... /8galvanized sheet1.22*2.441.43/5/8 best perforated metal mesh