1. Manufacturing Mold for Outer Tube
 2. Casting (Heat Resisting Steel)
 3. Material For Plate
 4. Bending, Welding, and Correction for Plate
 5. Rough Lathe Work of Plate & Tube (Turning work)
 6. Surface Welding on Plate & Tube
 7. Fine Lathe Work of Plate & Tube (Turning Work)
 8. Grinding
 9. Rust control, Painting, and Packaging