Steel Roll Aluminum 1)Material:aluminum alloy 2)No aluminum roll-axis rotation - cross-line 3)Standard: GB5237-2008 Steel Roll Aluminum1)Alloy No.:6061,6063 ... ,Polish 4)Coating Colour:silver, bronze, champagne, black, blue, glod and so on.5)Certificates:ISO 9001:20086)Standard: GB5237-2008 ... film wrap, string, woden case,or according to customers' need. Steel Roll Aluminum