... Rhombus Hole construction, decoration, expressway guardrail Hongxin supply perforated material in three basic forms. They are sheet, ... flat, fabricated, and/or finishedproduct.Perforated Metal perforated stainless steel, perforated aluminium board, perforated iron plate. the product is ... choose in hole pattern or arrangement Hole shape of perforated metal: slot, round, square, hexagonal, diamond, ...