Hebei Shengqiang Door Industry Co., Ltd. is located in the Renqiu High-Tech Industrial Park in Hebei, known as the "Pearl of North China," and lies on the main transportation artery of the Beijing-Tianjin-Hebei region. It is an integrated entity that specializes in the production, sales, and installation of various fire curtains, fire doors, security doors, and industrial doors. The company maintains training institutions for cultivation, production, installation, and sales year-round, making it 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 curtain door 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 walls, when natural lighting and ventilation are needed.

Fire-resistant window categories:
Fixed fire windows: Fire-resistant windows without operable sashes.

Operable fire window: A fire window featuring an operable sash and equipped with a control device for opening and closing the sash.

Insulation and Fire-Resistant Windows (Type A): Fire-resistant windows that meet both fire integrity and insulation requirements within the 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 limits and insulating performance:
Window Selection for Fireproofing

Fire-resistant windows are made of steel, available in two grades: Grade A (fire resistance of 1.20 hours) and Grade B (fire resistance of 0.90 hours).

Fire-resistant windows are mainly used in fire walls of high-rise buildings, requiring 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, kitchen windows in all other structures should be of Grade B fire-resistant windows.

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

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