3000 series aluminum alloy is Al-Mn series alloy,it is one of the most widely used anti rust aluminum alloy,the strength of this alloy is not high(slightly higher than 1000 series). And 3000 series alloy can't be heat treatment,So using cold processing method to improve its mechanical properties,it has a very high plasticity in the annealing state,in the semi cold work hardening,it has good corrosion resistance,good welding performance and poor machinability. Mainly used in the oil tank, gasoline or lubricating oil pipe, all kinds of liquid containers, kitchenware, food and chemical products processing and storage device, transport liquid products, containers, with a variety of pressure vessel and pipe general implements, heat sink,copy machine drum etc.