... production experience 3 factories 1. Surface treatment: mill finish, anodized, powder coated, electrophoresis, wood finish, heat-insulation, mechanical polish, sand blasting2. Hardness: Min ... ,Bronze,Black for Anodizing;Multi-color for Powder spraying and Wood grain paintingSpecification 1. Alloy: 6063-T5/T62. Length: 6 m ...