Yes, aluminum sheets can be processed into aluminum coils. The process involves feeding a continuous strip or sheet of aluminum into a rolling mill, where it undergoes a series of rolling operations to reduce its thickness and increase its length. This process is known as aluminum coil or aluminum strip rolling.

Here is a simplified overview of the process:

1. Preparing the aluminum sheet: The initial aluminum sheet is typically produced through casting or hot rolling processes. It is then leveled and trimmed to the desired dimensions for further processing.
2. Feeding the sheet into the rolling mill: The aluminum sheet is fed into the rolling mill, which consists of a series of rollers that progressively reduce the thickness of the sheet while increasing its length. The sheet is guided through the mill using a combination of rollers and guides.
3. Rolling and annealing: The aluminum sheet passes through multiple rolling stands, each exerting pressure to reduce its thickness. In some cases, the sheet may be heated and annealed between rolling passes to improve its properties and facilitate further reduction.
4. Coiling the aluminum strip: As the sheet continues through the rolling mill, it gradually transforms into a thinner and longer strip. The strip is then wound onto a coil, creating an aluminum coil or aluminum strip.

Aluminum coils have various applications, including in the manufacturing of automotive parts, building facades, heat exchangers, and electrical components.