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Production process steps

Piercing

1. Round bars

2. Cutting to length

3. Peeling

4. Grinding

5. Inspection (rejected bars are re-ground)

6. Reheating

7. Piercing

Cold drawing / cold rolling

8. Head cutting

9. Pickling, washing and neutralization

10. Inspection (defects are removed by grinding)

11. Pointing (head welding)

12. Lubrication

13. Cold drawing or cold rolling

Finishing

14. Heat treatment

15. Straightening

16. Head cutting

17. Pickling, washing and neutralization

18. Inspection (non-destructive testing)

19. Packing

20. Storage