... :1.Materials : stainless steel plate ,low carbon steel plate,galvanized sheet plate, cold-rolled coil, hot rolled coil ,aluminum copper ... etc. 3.Hole Types : square hole, diamond hole, round hole, slotted holes, hexagonal hole, the hole, triangle hole, long waist hole ... ooze water filter water screen.etc. 6.Product Show : Your any inquiry will get my first attention ! galvanized round hole perforated ...