B21H - CPC Classification

• B21H1/00 » Making articles shaped as bodies of revolution 12
• B21H3/00 » Making helical bodies or bodies having parts of helical shape 3
• B21H5/00 » Making gear wheels, {racks, spline shafts or worms} 7
• B21H7/00 » Making articles not provided for in the preceding groups, e.g. agricultural tools, dinner forks, knives, spoons 29
• B21H8/00 » Rolling metal of indefinite length in repetitive shapes specially designed for the manufacture of particular objects {e.g. checkered sheets} 36
• B21H9/02 » for screw-rolling machines 9