Galvanized Slotted Hole Punched Sheet Metal 1.thick:0.2-12mm 2.open area:10%- ... Sheet Metal Punch Metal /Punched Metal/perforated metalMaterialCarbon steel, Aluminum, Brass, Copper.FinishPowder coated,galvanized,polished,or no finishHole shapeRound, Square, Slot, Triangle, Long ... friend,if you are interested in our punched/perforated metal,please contact us without hesitate,Tell us the Materials,Hole ...