"Conveyor belt class 10" is not a standard term commonly used in the conveyor belt industry. It's possible that this term could be specific to a certain educational curriculum, a particular manufacturer's product line, or a unique classification system within a company or industry. In general conveyor belt terminology, there are no widely recognized "class" numbers like "class 10." Conveyor belts are typically classified based on their material, strength, application, and specific properties such as heat resistance, oil resistance, or suitability for food-grade applications. If "class 10" refers to a specific type or grade in a particular context, it would be best to consult the relevant documentation or source for clarification on what this classification represents.