1. Sand blasting
2. Hot zinc spraying
3. Adjust door (check the door smooth and straight or not )
4. Epoxy primer( base painting to protect the steel of surface)
5. Putty filler ( the first putty filer and after 2-3hours to next step)
6. Fine grinding
7. Twice epoxy primer(enhance the corrosion protection)
8. Putty filler ( the second putty and after 3-4hours to next step)
9. The second fine grinding
10. Spray black paint (after 1-2hours to next step )
11. Trial assembly (adjust door again and check the crack 、welded junction or not)
12. The third putty filler (after 3-4 hours to next step )
13. The third fine grinding
14. Use the 320 sand paper to polish the surface and the fabric to clean up the debris
15. The fourth putty filler (after 3-4 hours to next step)
16. The fourth fine grinding
17. Use the 800 sand paper to polish the surface and the fabric to clean up the debris
18. Spraying surface paint
19. Paint surface color(can be stained in different colors as per customer’s special requirement)
20. Paint the varnish (after 8-12 hours to next step and varnish need to be mixed with thinner on ratio one by one)
21. Use the 1000 sand paper to polish the surface and the fabric to clean up the debris
22. Twice paint varnish (after 24 hours )
23. Finished door
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