Fire-resistant door with normally closed feature

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 is a key transportation route in the Beijing-Tianjin-Hebei region. It is an integrated entity company that produces, sells, and installs various fire-resistant roller shutters, fire doors, security doors, and industrial doors. The company has a year-round training institution for cultivation, production, installation, and sales, making it a service-oriented company with strong cohesion and combat power. Equipped with state-of-the-art facilities, the company has multiple production lines for fire doors, security doors, and roller shutter processing equipment. Quality is a top priority.

Fire doors are doors that, for a certain period, meet the requirements of fire resistance, integrity, and thermal insulation. They are installed as fire-rated partitions in fire-separated areas, evacuation stairwells, vertical shafts, etc., and possess a certain degree of fire resistance. In addition to the common functions of doors, fire doors also play a crucial role in preventing the spread of fire and smoke, effectively containing the fire for a period of time to ensure safe evacuation of personnel.

Fire Door Usage: Commonly used in various buildings as movable fire separation components. Qualified fire doors should have excellent heat resistance, insulation, and resistance to smoke penetration, and should be equipped with an automatic closing function after personnel have passed through during a fire, ensuring their fire separation function is fully utilized.

Fire door categories are divided into: - By material: Steel insulated fire doors; Wooden insulated fire doors; Steel-wood insulated fire doors; Insulated fire doors of other materials. - By fire resistance limit and insulation performance:

Grade A fire doors must be no less than 1.5 hours.

Grade B fire-resistant doors for not less than 1 hour.

Grade C fire doors must not be less than 0.5 hours.

By closure characteristics: Normally Closed Fire Doors; Normally Open Fire Doors.

Select fire doors of different levels to suit your needs.

Welcome to inquire, both new and old customers!