304 stainless steel square steel is a classic austenitic material, containing 18% chromium and 8% nickel, with excellent mechanical properties and corrosion resistance. Its tensile strength is ≥515MPa, yield strength is ≥205MPa, the surface is smooth and easy to clean, and the weldability is excellent. It is suitable for chemical equipment, building structures and decoration projects. It has strong resistance to atmospheric, acid and alkali corrosion, but may produce pitting in high-chlorine environments (such as seawater). As a general-purpose stainless steel square material, it has a balance between cost and performance, and is widely used in mechanical parts, railings and handrails, etc. It supports customized sizes and surface treatments to meet diverse needs.