Need to be painted
Steel structure purlins need to be painted with fire retardant paint. This is because:
According to the building installation regulations, all important components exposed to the outside must be painted with fire retardant paint, and steel structure purlins are one of such components. Fire retardant paint can effectively improve the fire resistance limit of components, thereby enhancing the overall fire resistance of the building.
The use of fire retardant paint directly affects the fireproof effect of components. In a fire, this paint can significantly extend the fire resistance time of steel structure purlins and reduce the strength loss and structural damage caused by high temperature.
From the perspective of fire safety, purlins without fire retardant paint cannot pass the fire inspection, which is directly related to the completion acceptance and safety of the building.
In summary, in order to ensure the safety of the building and comply with fire safety regulations, steel structure purlins must be painted with fire retardant paint.