... rack 3,aluminum holder 4,bended aluminum extrusion bended aluminum bar bended aluminum extrusion1,Material:mainly in 6000 grade,Such as ... ,3003,5052,6060,6463,6082…2,The processing methods including: Aluminium profile extruding,Precise cutting,Straight rectification,Bending,Drilling,Tapping,Stamping ... american standard AAMA611-98.5,OEM. bended and punched aluminum bar,flat aluminum bar,aluminum bracket