This sluice gate combines the advantages of steel gates and cast iron sluice gates. The gate leaf is welded from Q235 or 16Mn medium plate, and the water sealing surface is precision-machined from H62 brass or stainless steel to achieve a precise fit with the cast iron gate frame for water sealing. The anti-corrosion treatment on the gate leaf surface is carried out in accordance with SL105 specification. This sluice gate is easy to install, safe and reliable, and eliminates the trouble of frequ