We use perforated metal mesh in the process of punching board there will be some rust. When this situation how can we solve it? Many people think that after punching galvanized metal mesh does not rust, in fact, this understanding is not correct, the time is too long galvanized perforated plates used in harsh environment also will be born rust phenomenon, for everyone here briefly the cause of rust. Generally two ways in the production of galvanized metal mesh: one is pre galvanized steel, galvanized secondary one is late. Pre galvanized is the direct use of galvanized iron plate after plate processing, this process is cheaper, secondary galvanized iron after processing is finished, the hedge-prepared metal mesh electroplating or hot-dip processing, general secondary galvanized lives are 5--6 years. If the customer decides to use pre galvanized steel, we can use some of galvanized sheet galvanized layer thickness points to process, so life can also be achieved 5--6 years. In punching network appeared rusty, I suggest that you use a brush that worn embroidered stains in spray paint, conditions can be returned for re-galvanizing.