... Cross bar pitch;50,100mm 3.Plain,Serrated,I-shape 4.Hot-dipped galvanized,Painted, Hot dipped galvanized steel ... Grating is made by carbon or mild steel of certain sizes through the processing of grooving, lockpressure, welding, finishing and other ... condition. Specifications: More specifications and sizes optional for meeting various environment, load, span, sizes and shapes.4.Surface Treatment:Steel ...