Fiberglass manufacture, Owens-Corning, Toledo, Ohio. A warp beam of fine fiberglass yarns being put into a loom preparatory to weaving all-glass fabrics used to make electrical insulation, pipe lagging for naval vessels, and industrial service fabrics where high tensile strength, resistance to corrosive vapors, and non-inflammability help improve performance, save weight, and add dependability to vital equipment. Uses and applications of fiberglass materials are covered by many Federal, Army, Navy and Maritime Commission specifications