Evaporation heat exchange tube and manufacturing method thereof

The invention relates to an evaporation heat exchange tube and a manufacturing method thereof.The evaporation heat exchange tube comprises a circular tube body formed by bending and welding a metal belt, and a plurality of channels which are sequentially arranged in the axial direction of the tube body at intervals are formed in the inner surface of the tube body; each channel extends in the circumferential direction perpendicular to the axis of the pipe body, the width of a channel opening is smaller than that of the channel bottom wall, the channel bottom wall is provided with a protruding part protruding towards the channel opening, and an acute included angle is formed between each channel side wall and the channel bottom wall. The groove channel bottom wall has the width size larger than the width size of the groove channel opening in the axial direction, and the first groove channel side wall and the second groove channel side wall are arranged in a splayed shape. The heat exchange effect of the evapora