Home / Standards / GB/T 20503-2006 GB/T 20503-2006 Active Anodizing of aluminium and its alloys - Measurement of specular reflectance and specular gloss at angles of 20°,45°,60°or 85° 铝及铝合金阳极氧化 阳极氧化膜镜面反射率和镜面光泽度的测定 20°、45°、60°、85°角度方向 Standard Type GBT ICS 25.220.20 CCS H20 Status 现行 Issue Date 2006-09-26 Implementation 2007-02-01 Responsible Dept 中国有色金属工业协会 Drafting Unit N/A