Green Cast Fiber Cast 5 inch is a highly moldable synthetic orthopedic cast made from knitted fiberglass. It is strong and long-lasting due to being made of synthetic fiberglass material. This cast tape won’t need to be replaced as often as a result of fewer breakdowns. Make it last even longer with cast protectors for when it is exposed to water. grey cast iron grades grey cast iron cost grey cast iron class 30 grey cast iron price. grey cast founders fiber cast 5 inch grey cast iron grades india grey cast iron graphite flakes grey cast iron grades. grey cast iron grades table green cast india grey cast iron carbon content.