GB/T 20503-2006 "Anodizing of aluminium and its alloys - Measurement of specular reflectance and specular gloss at angles of 20°,45°,60°or 85°"

The standard GB/T 20503-2006 Determination of specular reflectance and specular gloss of anodic oxide coatings for aluminium and aluminium alloys specifies methods for measuring specular reflectance and specular gloss of anodic oxide coatings for aluminium and aluminium alloys at angles of 20 °, 45 °, 60 ° and 85 °. This standard aims to ensure that the Optical Properties of aluminium and aluminium alloy products after anodic oxidation treatment meet technical requirements.

This summary is not the original standard text and is for reference only. For accurate information, please obtain it through official channels.