Fire hydrant castings are an important part of the fire hydrant and a fixed fire-fighting equipment. The main function of fire hydrant castings is to control, isolate and eliminate fire sources to prevent the spread of fire and protect people's lives. In fire protection systems, fire hydrant castings are widely used, including outdoor fire hydrant systems, indoor fire hydrant systems, fire extinguishing systems, etc. Some advanced fire protection systems may also be equipped with automatic sprinkler systems, water cannon systems, gas fire extinguishing systems, fire detection systems, water mist systems, etc. to improve the efficiency and effectiveness of fire response.