Aluminum Circle/ Triangle/ Square/ Octagon for Traffic Signs Technical information: Aluminum octagon sign blanks alloy: 1100 H14, 3003 H14, 5754 H34, 5454 H34, 5052 H38 Thickness: 0.48mm, 0.81mm, 1.0mm, 1.27mm, 1.60mm, 2.0mm, 2.54mm, 3.175mm Surface: mill finish surface, color coated surface, anodized surface. Additional sizes, shapes, and gauges are available upon special request. Holes punching: Standard hole diameter: 3.175mm, 4.76mm,
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