... :aluminum alloy 2)Mainly used for roof construction series 3)No roller axis of aluminum Aluminum Alloy Roller1)Alloy No.:6061 ... :T3-T83)Surface Treatment:1,Powder Coating 2,Anodize 3,Electrophoresis 4,Mill Finish 5,Wood Grain 6,Flourocarbon ... 1,Extrusion production lines. 2,Anodizing and electrophoresis production lines. 3,Spraying production lines. 4,Thermal insulation production lines. 5,Fluorocarbon ...