All
265
245
8
3.SurfaceTreatmentof Sections
(Class)
(μm),notdiminish than
acid-resistant
abrasionresistance
(Min-averagefilmthickness)
(Min-partfilmthickness)
CASS
(S)
(f, g/μm)
(h)
Class
AA10
10
16
≥9
≥50
≥300
AA15
15
12
32
≥75
AA20
20
56
≥100
AA25
25
72
≥125
aluminium profile