What are the core application scenarios for Q195 steel plates in the construction industry?
Light steel keel, ceiling supports, partition wall frames, roof panels, ventilation ducts, scaffolding, door and window frames, and secondary support components.
Can Q195 be used in building load-bearing structures?
It is strictly prohibited to use it in main beams, columns, foundations, and other major load-bearing parts. It can only be used in purlins, wall beams, and other secondary load-bearing components.
Why is Q195 cold-rolled steel plate preferred for light steel keels?
Thickness 0.6-1.2mm, strength increased by 20%-40% after cold bending, meeting non-load-bearing requirements and at a lower cost than Q235.
What are the recommended specifications for Q195 steel plates used in building ventilation ducts?
Generally, cold-rolled steel plates for ventilation are 0.5-1.0mm thick. Smoke exhaust ducts require ≥1.2mm thick plates and must undergo fireproofing and anti-corrosion treatment.
What are the requirements for Q195 steel plates used in scaffolding?
Hot-rolled steel plates with a thickness of ≥3.0mm must be used. After welding, anti-slip and anti-corrosion treatments must be applied. It is strictly prohibited to use it for ultra-high-rise scaffolding.