The core production process of aluminum alloy lean tubes can be divided into three major stages: base material preparation, profile forming, and post-treatment. The specific process steps are as follows: First, base material melting and alloy composition adjustment: Using pure aluminum as the base, alloy elements such as magnesium, copper, zinc, and chromium are added in proportion, with the magnesium content controlled at 0.49%-0.9%, and zinc and chromium at about 0.1%, to form a wrought aluminum alloy formula that meets performance requirements.