1. What is the main use of round steel? Round steel is often used in the manufacture of mechanical parts, shafts, bolts, nuts, etc., and can also be used for the support and reinforcement of building structures. 2. What are the common materials of round steel? - Common round steel materials include carbon steel, alloy steel, stainless steel, etc., different materials have different performance characteristics. 3. How to choose the right diameter of round steel? - The selection of round steel diameter should consider load requirements, assembly space and mechanical properties and other factors. 4. What are the surface treatment methods of round steel? - Surface treatment methods include galvanizing, phosphating, sandblasting, etc., to improve corrosion resistance and wear resistance. 5. What should we pay attention to in the storage and transportation of round steel? - Avoid wet and corrosive environment when storing, and pay attention to prevent deformation and damage during transportation.