Q345 steel is used for anti-tailgating doors/interlocking doors?
A: Q345 is commonly used for door frames/shells/lock tongue reinforcement, providing impact resistance and protection against violent damage.
Q345 steel is used for bank equipment bases?
A: Q345 steel profiles/plates are used for ATMs, safes, cabinets, and large equipment bases, providing load-bearing capacity, vibration damping, and anti-slip properties.
Q345 steel is used in bulletproof/explosion-proof structures?
A: Q345 combined with composite materials/bulletproof steel plates is used in high-security areas, command centers, and vaults, providing bulletproof, explosion-proof, and impact resistance.
What are the seismic performance characteristics of Q345?
A: Good plasticity, elongation >=17%, low yield strength ratio, absorbs energy through plastic deformation during earthquakes, and is not prone to brittle fracture, meeting the seismic resistance requirements of banks >=7 degrees.
What are the fire resistance requirements for Q345 steel in banks?
A: Fire resistance rating Class I/Class II: Columns 2–3h, Beams 1.5h, Plates 1h. Use fire-retardant coatings, fireproof boards, and concrete to wrap it.