Nolifrit detailed classification of enamel frit 2 steel enamel cover coat cover coat is coated on the ground coat layer to meet the requirements of whiteness, gloss, acid resistance, alkali resistance, water proof and atmospheric resistance required by the enamel product, so that the product has a smooth and beautiful enamel surface. 2, achieve the perfect enamel surface in just one time coating and firing. 3, smooth enamel surface and high glossiness(for glossy frit), good acid resistance. cast iron enamel frit usage introduction. cast iron body need pretreatments as anneal and sand blast to make it clean. Transparent frit for cast iron. ... product description: 1, applied to cast iron industrial part, cast iron utensils, cookware and kitchenware. 2, smooth enamel surface and high glossiness(for glossy frit), good acid resistance. cast iron enamel frit usage introduction. Recently we heard good news from one of our enamel bolted tank customers. nolifrit anti fish-scale enamel frit is highly recognized by customer, for both its enamel surface glossiness, flatness and operating performance. customer would like to reorder soon. enamel bolted tank is a kind of storage containers with very nice performance.