Aluminium alloy petroleum liquefied gas bottle body and preparing method thereof

The invention discloses an aluminium alloy petroleum liquefied gas bottle body and a preparing method thereof. The aluminium alloy petroleum liquefied gas bottle body comprises a lifting handle, a bottle main body, a base and a valve, an installing hole is formed in the top of the bottle main body and is provided with the valve, the lifting handle is arranged at the position, outside the valve, ofthe bottle main body, the valve is half surrounded by the lifting handle, the base is arranged at the bottom of the bottle main body, the bottle main body comprises an upper bottle body and a lower bottle body, opening parts of the upper bottle body and the lower bottle body are subjected to butt welding to form the bottle main body, the size of the upper bottle body and the size of the lower bottle body are coincident, and a valve hole is formed in the top of the upper bottle body. The preparing method of the aluminium alloy petroleum liquefied gas bottle body comprises the steps of A, blankheat treatment, B, blank