... ,Aluminium,Galvanized metal,copper Round,square,hexagon,oblong,etc ISO9001 Perforated sheet/ Punching hole mesh manufactured by our ... Steel sheetHole Shape:Round, Rectangular, Square, Triangle, Oval, Oblong, Slot hole, Pentagon, Hexagon, other kind of hole can be ... . also can be expressed in gauge.Round Hole, 60° StaggeredRound Hole, 60°, StaggeredRound Hole, Straight RowHole size and PitchOther name ...