1. Uncoiling & Storing

2. Forming

3. Welding

4. Sizing

5. Cutting

6. End facing

7. Inner weld bead blowing

8. Straightening

9. Non-destructive test

10. Demagnetizing

11. Marking (option)

12. Coating (option)

13. Quality test

14. Packing

15. Storage & Shipping