Hebei Shengqiang Door Industry Co., Ltd. is located in the Renqiu High-Tech Industrial Park in Hebei, which is known as the "Pearl of North China." It lies along the major transportation route of Beijing, Tianjin, and Hebei, and is a comprehensive entity company integrating the production, sales, installation of various fire-rated roller shutters, fire doors, security doors, and industrial doors. The company has training institutions for cultivation, manufacturing, installation, and sales year-round, making it a service-oriented company with strong cohesion and combativeness. Equipped with top-notch facilities, the company boasts multiple production lines for fire doors, security doors, and roller shutter processing equipment. Quality is a top priority.

Fire-resistant windows refer to windows, including their frames, that can meet the requirements for fire resistance stability and integrity within a specified period. They should be used on the exterior walls of two buildings where the fire separation distance is insufficient, or between spaces separated by fire partitions, when natural lighting and ventilation are needed.

Fire-resistant window classifications:
Fixed fire window: A fire window without an opening sash.

Operable fire windows: Fire-resistant windows with operable sashes and equipped with control mechanisms for opening and closing the sashes.

Insulation Fireproof Windows (Type A): Fireproof windows that meet both the requirements for fire resistance integrity and insulation within the specified time.

Non-insulating fire-resistant windows (Class C): Fire-resistant windows that meet the integrity requirements for fire resistance within a specified time. Divided by the fire resistance limit and insulating properties:
Fire-resistant window selection:

Fire-resistant windows are made of steel, available in two types: Class A (with a fire resistance of 1.20h) and Class B (with a fire resistance of 0.90h).

Fire-resistant windows are primarily used in fire walls of high-rise buildings, requiring the use of Class A fire-resistant windows that can close automatically.

When the horizontal distance between windows and doors near both sides of the fire-resistant wall is less than 2 meters, Class B fire-resistant windows should be used.

In addition to residential buildings, kitchens in other structures should be equipped with Class B fire-resistant windows.

One and two-grade fire-resistant building vestibule partition walls should have windows with B-grade fire-resistant windows.

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