What's the price of a 3/8 x 24 x 72 inch plate of aluminium suitable to be bent into a semicircle?
i found one here for $425 but am not sure if it would be suitable for bending as i was not familiar with the alloy/temper. but if you email or call them they are excellent with answers on all their products.

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[URL=http://www.infocera.com/]Price in India[/URL]