Specialty steels are made of iron ore or steel scrap with the appropriate addition of alloying elements such as chrome, nickel, manganese and molybdenum.
The initial phase is to melt the raw materials.
Unwanted elements are then removed and alloying elements added. The molten steel is cast into a mold and cooled down to make a bloom. The bloom is lengthened under the pressure of huge rollers and turned into a billet. A billet may then be transformed into bars or coils of various sizes and shipped, after strict inspection, to secondary processing manufacturers.

Specialty steels made by primary manufacturers are supplied to secondary processing manufacturers such as Miyazaki Seiko. The secondary manufacturers then process the specialty steels, utilizing various processing technologies, into the different shapes, dimensions and mechanical properties that the customers require to meet the design criteria of their own products.
Miyazaki Seiko manufactures precision cold-drawn bars, pipe in coils, CHQ-wires and fine slugs utilizing such process technologies as drawing, peeling (grinding), annealing, coating and cold forging.

A major portion of the secondary-processed specialty steel products produced by Miyazaki Seiko is supplied to automotive parts manufacturers who make up one of the major industrial pillars of Japan. The finished parts are used by many domestic and foreign automobile manufacturers for critical applications in the form of bolts, nuts and other parts as described below.