In order to distinguish between the three types of kilometer routes, three Arabic numerals are often used. The first figure indicates the national road category: "1" represents the first category, namely, the highway radiated by Beijing; "2" represents the second category, namely the north-south highway; "3" represents the third category, and east-west kilometers. The second and third figures indicate the sequence number of such roads. For example, the Beijing-Guangzhou route is the “106†national road, which is the first type of the sixth highway that uses Beijing as its center. Greening sprinklers have rapidly developed in China's expressways. At present, China's expressways have begun to take shape, and their highway names are named after the starting cities or destinations. Such as Beijing Shijiazhuang, said the Beijing-Shijiazhuang Expressway, Shanghai to Nanjing, said the Shanghai-Nanjing Expressway. There are some major cities that use code names for self-built short-term freeways. Special Custom High Speed Door
Our company is a door manufacturer integrating R&D, design, manufacturing, sales, installation and after-sales service. Our products include PVC soft-curtain high speed rolling door , PVC Curtain swing door, self repairing high speed door , turbine hard fast shutter door, automatic sliding doors, automatic swing doors, revolving automatic doors, automatic hospital doors,and folding automatic doors.
Nowadays, many companies like to buy PVC soft-curtain high speed rolling doors when purchasing PVC fast-rolling doors. What are the characteristics and advantages of it that make everyone love it? Let's talk about the overall advantages of PVC fast roller shutter doors.
Features and advantages of PVC fast roller shutter doors:
1.Good UV protection effect of PVC fast roller shutter door
The UV-proof door curtain of PVC fast rolling door, as the screen of the welding welding area, can filter harmful UV rays through the scenery, which is convenient for viewing the working situation, and prevents the flying and diffusion of sparks, smoke, debris, etc., to protect the safety of personnel. prevent fire.
Sound insulation effect PVC fast roller shutter door curtain can reduce noise decibels, prevent noise diffusion, reduce noise pollution, and be used as a machine compartment screen to improve the sound insulation effect of operations.
2. Good cold resistance effect of PVC fast roller shutter door
In the case of low temperature, the PVC fast rolling shutter can still maintain a high degree of softness, making it convenient for people and vehicles to enter and exit, and has a good isolation effect. It can prevent the loss of air conditioning and heating to a greater extent and save energy.
3. Good airtight performance of PVC fast roller shutter doors
A sealing strip with better sealing performance is installed in the track of the fast roller shutter door. With the weight of the door curtain itself, it will not bend and affect the normal operation under the wind speed of the harsh weather.
4. Good thermal insulation and energy saving effect of PVC fast roller shutter doors
PVC fast rolling shutter not only consumes no electricity, has no noise, no moving components, improves freezing efficiency, but also reduces the number of revolutions of the freezer, saving up to 50% of electricity.
5. Good anti-static effect of PVC fast roller shutter door
The curtain of the PVC fast rolling door does not produce static electricity after friction, which is suitable for the factory effect where static electricity is strictly prohibited.
Widely used in office buildings, public buildings, hotels, hospitals, supermarkets and factories in Asia, Eastern Europe and Africa. The specific requirements of an effective door system in different situations (eg clean room, operating room) may vary in different parts of the world.
Special Custom High Speed Door, Special Custom Rapid Door, Special Custom Fast Door SHENZHEN HONGFA AUTOMATIC DOOR CO., LTD , https://www.hongfafrs.com
When the sprinkler is on the national road, it can be used on three types of national roads. The first type is the highway with the capital Beijing as the center; the second type is the north-south highway within the territory of our country; the third type is the east-west highway.