The modulus of elasticity of steel profiles is 3 times that of aluminum alloys, and the strength of steel buildings far exceeds that of aluminum alloy profiles.
Steel profile has more span than aluminum alloy
Steel, glass, and concrete have almost the same thermal expansion coefficient, so there is no need to leave expansion joints when installing steel frame doors and windows
Steel frame door much better at fireproof, anti-theft, explosion-proof, and bulletproof.
The fireproof performance of steel frame doors and windows is far better than aluminum alloy. The melting point of steel is 1500°, and the melting point of aluminum alloy is 600°.
Steel will not melt when exposed to fire, will not release corrosive gases, and the frame will remain stable
Steel profile system can meet different fire protection requirements
The steel profile is strong and stable, high load, and durable, it is the ideal choice for security application.
Steel profiles are suitable for high-frequency operation, such as commercial fire-rated doors.