A pure aluminium coil refers to 1xxx series of aluminium coil, like the 1070 aluminum coil for sale, while an alloy alu coil stands for alu coil rolls of all other series, including 3xxx, 2xxx, 4xxx, 5xxx, 6xxx, 7xxx and 8xxx, among which only 3 are the most frequently applied. 1xxx coil is known as the pure coil group because …