Hebei Shengqiang Door Industry Co., Ltd. is located in the Renqiu High-Tech Industrial Park in Hebei Province, which is known as the "Pearl of North China." It is a key transportation hub in the Beijing-Tianjin-Hebei region and an integrated entity that produces, sells, installs various fire-resistant roller shutters, fire doors, security doors, and industrial doors. The company has training institutions for cultivation, manufacturing, installation, and sales on a regular basis, making it a service-oriented company with strong cohesion and combativeness. Equipped with state-of-the-art facilities, the company boasts multiple production lines for fire doors, security doors, and roller shutter processing equipment. Quality is a top priority for the company.

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 categories:
Fixed Fire Window: A fire window without operable sash.

Operable fire-resistant windows: Fire-resistant windows with operable sashes and equipped with sash opening and closing control devices.

Insulation Fireproof Windows (Type A): Fireproof windows that can simultaneously meet 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 requirements for fire resistance integrity within a specified time. Divided by fire resistance limits and insulating properties:
Fire-resistant window selection:

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

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

When the horizontal distance between doors and windows 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 use Class B fire-resistant windows.

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

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