1.Aluminum round hole perforated metal 2.thickness :From 0.5mm to 4mm 3.ISO9001;2008 4.fast delivery round hole perforated metals ... for sale (china supplier) Byname:sieving plate,the hole has round ,length,square,scale hole, hexagonal hole.Material:low carbon ... elimination, machine-protecting and decoration etc.Hole shape:Long hole, round hole, square hole, triangle hole, scale hole, bridge hole, ...