Chemicals storage silos are widely used in chemical industry for the storage of carbon black, activated carbon, calcined coke, urea, alumina, sodium carbonate, fly ash, desulphurization gypsum and other chemical products. Due to the perfect storage performance, the application of chemicals storage silos makes chemical materials more easily to be transported, stored and utilized. Therefore, chemical storage silos can not only streamline procedures but also contributes to the development of chemical industry. As we all know, chemicals often have high instability, and they are sometimes corrosive, toxic or radioactive. The radioactive chemicals are stores in very thick concrete storage bin, and so does the highly toxic chemicals. However, for the common slightly corrosive bulk chemicals, spiral chemicals steel silo is a good choice, because the steel silo is made of highly galvanized carbon steel sheet. And this kind of spiral storage silo has no bolts, thus ensuring good airtightness, which makes it very suitable for storing the dry bulk chemicals with high volatileness.