There are many potential applications for substances which cover steel and/or iron which provide a hard working surface which is subject to abrasion, such as, power screens cloth, plows, piping (especially elbows in industrial applications like power plants) well casing, other casing, ship hulls, other farm equipment, etc.
Having said that, it is better for a development stage company such as Bork to focus on a narrow ranch of initial products to avoid consumption of scarce company resources. Investments in new product lines can come as resources increase from profits on initial product lines.