28
2021
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05
Steel fire-rated door
Author:
A steel fire-resistant window is a window whose frame is made of steel and which, within a specified time period, can meet requirements for fire resistance stability, fire integrity, and thermal insulation. 1. The window frame shall be constructed using either a steel frame or a wooden frame that possesses sufficient strength to ensure the structural integrity and stability of the component. 2. The steel frame and sealing strips may be made of galvanized steel sheets or stainless steel sheets. The material selection criteria shall comply with the provisions of Article 5.1 in GB 12955, "General Technical Specifications for Steel Fire Doors." 3. The fire-resistant glass used shall be a product that has passed the fire performance tests for fire-resistant windows without compromising their fire-resistance capabilities. The glass’s light transmittance shall be no less than 75% of that of ordinary flat glass of the same number of layers. 4. The sealing material between the frame and the fire-resistant glass shall be made of flame-retardant materials that can effectively prevent fire and smoke spread in the event of a fire. 5. The hardware accessories shall be standardized, pre-approved products that have undergone successful testing.
A steel fire-rated window is a window whose frame is made of steel and which, for a specified period of time, can meet requirements for fire resistance stability, fire integrity, and thermal insulation.
1. The window frame structure shall employ a steel or wood frame with sufficient strength to ensure the integrity and stability of the component.
2. The steel frame and trim strips can be made of galvanized steel sheet or stainless steel sheet. The material selection criteria shall comply with the provisions of Clause 5.1 in GB12955, "General Technical Specifications for Steel Fire Doors."
3. Fire-resistant glass may be selected from products that do not compromise the fire-resistance performance of fire-rated windows and have passed the relevant fire-test standards. The light transmittance of the glass shall be no less than 75% of that of ordinary flat glass with the same number of layers.
4. The sealing material between the frame and the fire-rated glass should be made of flame-retardant material, capable of providing fire and smoke isolation in the event of a fire.
5. Hardware accessories shall be standardized, pre-tested, and qualified products.
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