1. Material For Shaft
 2. Material for Boss
 3. Material for Plate
 4. Bending, Welding, and Correction For Shell
 5. Fine Lathe Work of Shaft & Boss
 6. Milling Work for Shaft
 7. Key Hole Slotter Work on Boss
 8. Fine Lathe Work of Plate
 9. Welding Plate & Boss
 10. Assembling Plate & Shaft and Welding Shell
 11. Rubber Coating
 12. Rust control, Painting, and Packaging