... holes, distortion or any other defects. 2) Material A) Ductile Iron GGG500-7, GGG 400-12, GGG600-3, GGG700-2 B ... ) Grey Iron GG20, 25, 30, 35 3) Designs A) EN124 A15, ... 4) Processes: A) Moulding boards B) Green sand with hand moulding 5) Coating A) Cold applied black bitumen B) Without ... Packing Steel or wood pallet, or as per customers' requirements. cast iron grating