... chemistry, Agriculture husbandry, Horticulture, Steel industry, Waste disposal, Food processing, Aquatic breeding, Fertilizer industry, Pharmaceutical industry, Parking lots, Cement plants, ... of 83.3 percent, more than twice of cast iron products. Hot-dip galvanized treatment: Good rust-proof ... strength and the toughness are much higher than cast iron. Can be used for terminals, airport and other ...