... alloy 2)Mainly used for roof construction series 3)No roller axis of aluminum Aluminum Alloy Roller1)Alloy No.:6061,6063...2 ... Surface Treatment:1,Powder Coating 2,Anodize 3,Electrophoresis 4,Mill Finish 5,Wood Grain 6,Flourocarbon Coating 7,PVDF ... Thermal insulation production lines. 5,Fluorocarbon production lines. 6,Smoothing mill production lines.9)Cutting Length: according to customers' need.10 ...