Jul 26, 2021 · Haomei Aluminum is a big aluminum circle manufacturer and supplier in China. Haomei aluminum discs circle is widely used for cookware, lamp cover, road signs, oil-tight hatch cover,etc. We have rich aluminum alloys such as 1060, 1100, 3003, 5052. DC and CC sheet metal circle are both available. The Stamping Process of Aluminum Discs.