... 3. Cold Casting, Extrusion, CNC Effectively Improves Heat Dissipation for LED Road Light1) Alloy6061,6063,6063B,6060,6005,6N012) Alloy chemical ... .35<0.5<0.25<0.3<0.13) TemperT3-T8 4) Surface Treatment 1.drilling 2.tapping 3.punching 4 ... ,CNC (milling finish),cutting,anodized High Quality Aluminum Alloy Housing LED Street Light