There are two types of cast iron gates: square and round. Cast iron gates typically consist of a gate body and a frame, both made of cast iron. The gate leaf and frame are usually cast separately. The entire gate body is generally constructed with a panel and reinforcing ribs, where the panel can be flat or arched. The gate body is typically cast and processed as a whole, but larger sizes may be divided into parts. Generally, a solid metal or bronze sealant strip is used as the support slider, with bronze sealant strips secured to the gate body using the same material's countersunk screws, and the screw head completing the sealing surface.

Cast iron gates offer excellent corrosion resistance. They are installed in one piece, resulting in lower maintenance costs compared to other gate types. Cast iron gates are typically used in combination with small screw actuators and other lifting machines. After long-term use, if there is wear, we can adjust the water stop module to ensure the gate continues to operate normally. Compared to steel gates, cast iron gates have a simpler structure and can withstand greater water pressure. Due to their lower manufacturing costs, cast iron gates are suitable for smaller waterways. In contrast, steel gates are larger and are only used in large waterways. The use of cast iron gates addresses issues such as heavy workload, high labor intensity, high costs, and poor water-sealing performance in the production of gates.