... round hole perforated metals for sale (china supplier) Byname:sieving plate,the hole has round ,length,square,scale hole, hexagonal hole.Material: ... , machine-protecting and decoration etc.Hole shape:Long hole, round hole, square hole, triangle hole, scale hole, bridge hole, diamond hole, pentagonal holes, hexagonal holes, ... 61.721.5221219.63.2424161219.64.23 Round Hole Punch Perforated Metal(Factory)