CST (previously A.O. Smith) Initially learned the methodology of controlling corrosion by fusing glass to steel during the 1930s. The know-how was originally used in the brewing and hot water heater industries. Proprietary formulations of borosilicate, minerals, water and clays are blended into a sprayable slurry termed “slip” Crafted from https://www.pinterest.com/pin/993958580252145952/