... rack 3,aluminum holder 4,bended aluminum extrusion bended aluminum bar bended aluminum extrusion1,Material:mainly in 6000 grade,Such as ... alloy uponcustomer’s requirement,like Special Al alloy-1060,1070,2011,2017,2021,2024,3003,5052,6060,6463,6082…2,The ... american standard AAMA611-98.5,OEM. bended and punched aluminum bar,flat aluminum bar,aluminum bracket