Six major issues that cannot be ignored in fireproof rolling shutter doors

Fireproof rolling shutter door is a type of fire prevention and insulation facility suitable for large openings in buildings, which plays a certain role in the design and installation technology of the product. Fireproof rolling shutter doors are widely used in fire-resistant partition areas of industrial and civil buildings, which can effectively prevent the spread of fire and are indispensable fire prevention facilities in modern buildings.

1、 Thickness issue of fireproof rolling shutter door curtain:

The issue of door curtain thickness refers to the thickness of the steel plate used for the curtain panel. Currently, there is a widespread phenomenon of cutting corners and using inferior materials. Some manufacturers use thicker steel plates for the curtain panel during testing, and after obtaining a certificate of conformity, they use thinner ones for production. Due to the difficulty in measuring the thickness of the curtain panel of the rolling shutter door at the installation site, it is easy to get confused. Therefore, many fireproof rolling shutter doors have reduced their service life and fire resistance time due to the thickness of the curtain not meeting the requirements.

2、 Structural issues with the lintel of fire-resistant rolling shutter doors:

The problem with the lintel structure is that according to the standard fireproof rolling shutter door, the lintel structure is set up, but currently the commonly used fireproof rolling shutter door is one without a lintel. When a fire occurs, this type of door cannot prevent the strong upward impact of the fire Causing smoke to spread outward through the door lintel. The sealing at the lintel is the key to fire and smoke prevention. If a fireproof rolling shutter door without a lintel structure is installed, it cannot truly serve as a fire barrier and is virtually ineffective.

3、 Fire resistant rolling shutter door guide rail issue

Insufficient depth of guide rails and improper structure and materials are common problems in the installation of many large rolling shutter doors. A large rolling shutter door guide rail should generally have a load-bearing main component However, many manufacturers use simple lightweight guide rails as a substitute. In the event of a fire, the door curtain is prone to detach from the guide rails and cannot provide fire protection.

4、 The problem of the bottom curtain of the fireproof rolling shutter door

The problem with the bottom beam of rolling shutter doors is that some products do not have a bottom beam, while others have a bottom beam but use thin materials. The bottom beam of the door curtain is an important component to maintain the strength of the door curtain. Without a bottom beam under the door curtain, it is equivalent to having one less sturdy frame at the bottom of the door curtain. Negative pressure in the fire will cause the entire door curtain to flip over.

5、 Strength issue of transmission device for fireproof rolling shutter door

The strength of the transmission device of the fireproof rolling shutter shaft is also an important parameter of the rolling shutter door. Currently, there are many products with unqualified strength, which seriously affects the use of fireproof rolling shutter doors. The structure of the rolling shutter shaft mainly refers to the depth and structure of the shaft heads at both ends of the rolling shutter shaft inserted into the steel pipe. The depth of the shaft head plug should be about 1/10 of the shaft length, and there should be two flanges and sufficient welds. Some manufacturers' products are stuffed very short, even using a flange, and there is a risk of breakage after using these shoddy doors for a period of time.

6、 The transmission problem of manual control for fireproof rolling shutter doors

The transmission problem of manual quick shutdown device during power outage in a fire. If there is a power interruption, on-site personnel can use a manual quick release device Close the door. Some fireproof rolling shutter doors are not equipped with this device now. Even if installed, it often does not work due to quality issues.