All along, corrosion is one of the most headache-causing hazards for chemical equipment. A slight carelessness can not only damage the equipment, but also cause accidents or even disasters. According to relevant statistics, about 60% of chemical equipment destruction is caused by corrosion. Therefore, when selecting a chemical pump, it is important to first pay attention to the scientific selection of materials. There is often a misconception that stainless steel is a "universal material," and people use it regardless of the medium and environmental conditions, which can be very dangerous. Below, we will discuss some key points of material selection for some commonly used chemical media.