... 2.open area:10%-70% 3.width:0.5m-3m 4.shape:Round, Square Galvanized Rectangular Metal Hole Punch Punch Metal /Punched ... galvanized,polished,or no finishHole shapeRound, Square, Slot, Triangle, Long round, Scale, Diamond, Oval, Hexangular, etcHole dia*pitch(mm)Customize, ... , Alloy Plate, etc.· Hole shape: Long hole, square hole, round hole, hexagonal hole, scale hole, stretching and other special-shaped ...