상세내용
1. Forging Material of Roll Shaft
2. Normalizing Heat Treatment
3. 1st Rough Lathe Work of Shaft
4. Q.T. Heat Treatment
5. 2nd Rough Lathe Work of Shaft
6. Hard-Facing Welding on Shaft
7. Fine Lathe Work of Shaft
8. Hole & Tap Hole Boring Work
9. Rust control, Painting, and Packaging