black bar grating Min.order:100 pieces FOB price:US $ ... Galvanized steel grating: 1)Material: There are mill steel black, hot dip Galvanizing and stainless steel grating.2)Usage: flooring ... shelves, ladder, fences and handrail so on for construction project, oil project, seaport, power plant, water plant, defense project, chemical ... /60/50G555/60/50G605/60/50 253/30/100 black bar grating (ISO9001:2000)