The service life of a zinc pot is closely related to the material of the steel plate, the type of fuel, the form of structure, the zinc capacity, the choice of heat load, the galvanizing process and the way of operation management, the balance of production volume and the type of plated parts. The service life of a zinc pot depends on the iron loss, which is scientifically evaluated by the weight of the zinc plate consumed per ton of plated parts per unit time. The service life of galvanizing pans varies greatly due to many factors. For example, the service life of galvanizing pans for continuous galvanizing of steel strips (flat steel) and steel pipes is only a few months to one or two years, while the service life of large galvanizing pans for low-temperature galvanizing of structural steel can be more than five years.