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high quality bend aluminum extrusion profile Chemical compositions: Grade Si Fe Cu Mn Mg Cr Ni Zn Al 6061 0.40-0.8 0.7 0.15-0.40 0.15 0.8-1.2 0.04-0.35 - 0.25 remains 6063 0.20-0.6 0.35 0.1 0.1 0.45-0...