... thin fibers. 70 years of the 20th century is widely used in metallurgy, machinery, building materials, petroleum, chemical industry. ... , fibrosis, made of inorganic fibers. Slag wool is industrial slag such as blast furnace slag, phosphorus slag, fly ... , paper and a variety of products, should be used for construction and industrial equipment, pipes, furnace insulation, fireproofing, acoustic, seismic, ...