Cast-aluminium heat exchange sheet for gas hot-water heat exchanger

The utility model discloses a cast-aluminium heat exchange sheet for a gas hot-water heat exchanger. The cast-aluminium heat exchange sheet comprises a heat exchange sheet main body, wherein a water inlet, a water outlet and a water flow channel are formed in the heat exchange sheet main body, and the water inlet is communicated with the water outlet by the water flow channel. The cast-aluminium heat exchange sheet further comprises heat exchange columns, wherein a plurality of rows of the heat exchange columns are distributed at the both sides contacting with smoke, on the heat exchange sheet main body. The cast-aluminium heat exchange sheet is capable of effectively increasing the heat exchange efficiency of the gas hot-water heat exchanger, and beneficial to reduce the volume, lighten the weight, save materials and lower cost.