The fire resistance limit of fireproof windows is: not less than 1.2 hours, not less than 0.9 hours for class B windows and not less than 0.6 hours for class C windows.

Skill requirements:

I. data and accessories

(1) the window frame structure shall be steel structure or wood structure with strength enough to ensure the integrity and stability of components.

(2) galvanized steel plate or stainless steel plate can be selected for steel structure and strip. The material selection specification conforms to Article 5.1 of gb12955 general technical conditions for steel fire doors.

(3) the selected data specification of wood structure and batten shall comply with the provisions of article 5.1.1 of gb14101 general technical conditions for wooden fire doors.

(4) incombustible materials shall be selected for filling materials inside steel and wood structures.

(5) fireproof glass can be selected from products that do not affect the fire resistance function of fireproof windows and pass the test. The light transmittance of glass shall not be less than 75% of ordinary flat glass with the same number of layers.

(6) the sealing data between the structure and the fireproof glass shall be flame-retardant data, which can play the role of fire prevention and smoke separation in case of fire.

(7) the hardware fittings shall be the finalized supporting products that have passed the test.

II. Device requirements:

1. When accepting the goods, Party A shall carefully check whether the quantity, standard, grade and various accessories are qualified and complete according to the supply contract.

2. The storage and storage of fireproof windows shall be kept straight in a dry room with anti-corrosion measures. The glass shall be placed and relied on objects that cannot damage the edge and surface of the glass.

3. Device

(1) the fireproof window device shall be inspected before installation. If the window frame and sash are warped, deformed and the glass is damaged due to careless transportation and storage, the device can be installed only after installation.

(2) when installing the fire window, the straightness of the front, rear, left and right shall be leveled with a level ruler or checked with a hanging line method to ensure that the horizontal, vertical and concave convex are the same.

(3) the window frame shall be integrated with the building, and wood or iron parts shall be selected to connect with the wall. After the steel window frame device is installed, the cement mortar shall be irrigated between the window frame and the wall, and it can be used normally after maintenance for more than 24 hours.

(4) the orientation of the hardware fitting device hole shall be accurate, so that the hardware fitting device can be flat and firm to meet the application requirements.

Article source: fireproof glass window http://www.ba-glass.com/