... grating Material: Carbon Steel Surface Treatment:Hot-dipped Galvanized or black technique:Plain or Serrated Steel grating ... uses include: Flooring,Stair treads,Sun shades,Drain covers,Security screens,Manhole covers,Mezzanine flooring,Earth ... variety of finishes: Mild Steel - Black (untreated) or galvanized Aluminium - Mill, anodized or powder coated F.R.P ... you receive the job on time. drain cover