Hebei Shengqiang Door Industry Co., Ltd. is located in the Renqiu High-Tech Industrial Park in Hebei, renowned as the "Pearl of North China," and serves as a key transportation artery in the Beijing-Tianjin-Hebei region. It is a comprehensive entity that integrates the production, sales, and installation of various fire-proof roller shutters, fire doors, security doors, and industrial doors. The company has a year-round training institution for cultivation, manufacturing, installation, and sales, and is a service-oriented company with strong cohesion and combat power. Equipped with advanced facilities, the company has 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 certain period. They should be used when there is a need for lighting and ventilation in the exterior walls of two buildings with insufficient fire separation distance, or between spaces separated by fire walls.

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

Operable fire-resistant window: A fire-resistant window with an openable sash and equipped with a control device for opening and closing the sash.

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

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

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

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 either side 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 use B-grade fire-resistant windows when openings are made for windows.

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