When we don’t know the quality of this product, whether it has passed the standard or not, we can use some methods to test it. The same is true for steel structure. What are the detection skills of fire retardant coating for steel structure?Let HJSD steel structure company’s small editor to talk about it for us.

    The quality of the products can be preliminarily inspected on site: cut 2-3 small samples on the steel structure that has been constructed, or take a small amount of samples to paint on 2-3 pieces of 150 mm × 150 mm plywood, and brush according to the actual construction situation.After drying out, check with flame of alcohol lamp.The flame height is about 40mm, and the time to apply the flame is generally 20min. Check the foaming condition of the coating.Under normal circumstances, according to the specified amount (generally 500 g / m2), the foam layer thickness of the first class fire retardant coating is more than 20 mm, and that of the second class fire retardant coating is more than 10 mm, and the foam layer shall be average dense.

    The quality of the products can be preliminarily inspected on site: cut 2-3 small samples on the steel structure that has been constructed, or take a small amount of samples to paint on 2-3 pieces of 150 mm × 150 mm plywood, and brush according to the actual construction situation.After drying out, check with flame of alcohol lamp.The flame height is about 40mm, and the time to apply the flame is generally 20min. Check the foaming condition of the coating.Under normal circumstances, according to the specified amount (generally 500 g / m2), the foam layer thickness of the first class fire retardant coating is more than 20 mm, and that of the second class fire retardant coating is more than 10 mm, and the foam layer shall be average dense.

    Check whether the product has the qualified overhaul speech issued by the national fire quality inspection center, and also can be inquired on the Internet.Fire retardant coatings shall be subject to fire product type approval system. Fire retardant coatings sold on the market shall have the national fire product type approval certificate and type maintenance qualification speech.

    In the actual use of steel structure, in order to ensure the fire protection and other functions of fire retardant coating, transparent coating is generally needed.The amount of fire retardant coating is generally 350-500 g / m2, and the amount of cover coating is generally 50 g / m2.

    According to the national standard, in addition to meeting the requirements of fire resistance, the combustion function of fire retardant coating can be divided into grade I and grade II.On the premise of the designated experiment, the fire resistance time of the first class fire retardant coating is not less than 20 minutes, and the heat resistance time of the second class fire retardant coating is not less than 10 minutes.Users should pay attention to distinguish when choosing, to avoid enterprises with inferior quality, can not achieve the effect of fire protection.

    The above is the steel structure fire retardant coating testing skills are what we pay more attention to quality, hope it can help you, if you want to know more about HJSD steel structure company, you can click the website page of HJSD steel structure company to browse!