Surface criteria/Classifications Aluminium

Surface class Definition.
Profiles with:
Handling and areas of use Viewing distance Recommended alloy
1 Extremely high surface demands
No scratches, marks or obvious structural ribbing may be seen on the visible surface of the profile.
Can only be obtained from material extruded in surface class 2 which, thereafter, is treated chemically or machanically and finally anodised.A visible surface all the way around cannot be obtained with this surface class.
Exception: ground surface.
Super quality
Individual handling and inspection at all stages.
Packing instructions with specified packing materials/methods shall be issued in consultation with the customer.
Max. supplied lengths specifically agreed with customer.Radio/TV, light fittings, picture frames and ornaments.
Ca 0,5-0,6 m 6060
6063
2 Very high surface demands
No scratches, marks or obvious structural ribbing may be seen on the visible surface of the profile that should be surface treated as surface class 1 above.A visible surface all the way around cannot be obtained with this surface class.
Exception: ground surface.
As a rule, profiles should be anodised.
Very high coating/anodising quality
Individual handling and inspection at all stages.
Packing instructions with specified packing materials/methods shall be issued in consultation with the customer.
Max. supplied lengths specifically agreed with customer.Radio/TV, light fittings, ornaments, exclusive furniture, kitchens and bathrooms.
ca 1m 6060
6063
3 High surface demands
No scratches, marks or obvious structural ribbing may be seen on the visible surface of the profile.
Graphite and other damage from the table is allowable on visible surfaces.
Damage/marks that disappear with anodising can be accepted on visible surfaces.As a rule, profiles should be anodised.
On other surfaces, as for surface class 4.
High coating/anodising quality
Packing instructions with specified packing materials/methods shall be issued in consultation with the customer.
Max. supplied lengths specifically agreed with customer.Furniture, lamps, shop fittings, windows, doors.
ca 2m 6060
6063
4 Normal surface demands
No obvious structural scratches or other damage to the profile should be visible.
Normal quality
Packing instructions shall be issued.Fine mechanical parts, cooling flanges, building systems (apart from windows and doors) balconies, awnings, railings, ladders. Standard profiles.
ca 3m 6060
6063
6005A
6082
6101
5 Insignificant or no surface demands
No obvious handling scratches or other damage should be visible on the profiles.Blistering and fracturing are not permissible.
Construction quality
Standard profiles (stock profiles at wholesaler stage)
Parts for coarse mechanical processing.
Floor profiles and on components where there is no visible surface whatsoever.
   

Copyright (©) Ramo AB

Ramo AB ansvarar ej för eventuella felaktigheter i ovanstående information.
Ramo AB takes no responsibility in the eventuality of errors in the above information.