Video intercom, alias is building intercom or video doorbell, English name is Video door phone or Video door bell. Introduced from developed countries in the 1990s, it has achieved rapid development in China. From the end of the 1990s to the present, it is mainly used in commercial residential buildings, and its scale has developed rapidly. When in use, the resident hears the ringtone and accepts the call from the visitor through the host at the door downstairs as if answering the visual dian dialect, and at the same time, the visual extension in the resident's home can receive video images through the camera at the host downstairs, and the resident observes the extension The monitoring image on the display screen confirms the identity of the visitor, and finally decides whether to press the unlock button of the indoor extension to open the electronically controlled door lock connected to the host at the door, allowing visitors to open the door and enter.
Visual intercom is an audiovisual communication system between residents and visitors in a residential area. It is the first line of defense for illegal intrusion in a residential area. Through the setting of this system, the resident can use the intercom / visual intercom extension at home, and can talk to the visitors through the intercom / visual intercom door host located at the entrance of the unit building and can pass the extension screen Images to identify visitors. When the visitor is confirmed, the owner of the household uses the door lock control key on the extension to open the electronically controlled door lock on the main unit at the entrance of the unit building to allow the visitor to enter; otherwise, all non-unit personnel and strange visitors are no enter.
The system can also be connected to emergency alarm buttons, infrared detectors, door magnet window magnets, smoke detectors, combustible gas detectors and other alarm devices to notify the management center of illegal intrusions, fire alarms, gas leaks, and emergency help in a timely manner. Providing residents with a convenient and safe life, reducing the annoyance of residents being reluctant to be disturbed, is also a manifestation of the grade and identity of the residential community.
Yangzhou Chengde is a Jointer venture company with American top Aerospace and Energy products
conglomerate PCC Group, fully integrated with PCC on technology and management. We can produce all the boiler pipes according to the ASME SA335, ASTM A335
and EN10216 standards, such as the P11 Steel Pipe, P12 steel pipe, P22 steel
pipe, P91 steel pipe, P92 steel pipe, P5 steel pipe, P9 steel pipe, P36 steel
pipe, 10CrMo5-5 steel pipe, 10CrMo9-10
steel pipe, 13CrMo4-5 steel
pipe, 15NiCuMoNb5-6-4 steel pipe, X10CrMoVNb9-1
steel pipe and X10CrWMoVNb9-2 steel pipe
In the year of 2015,
we win the first prize of National Science and Technology Progress Award by the
program of [The innovative research & development, and application of steel
pipes used in 600 ℃ Ultra-super critical coal power generation unit".
Yangzhou Chengde is continuously strengthening the
technical innovation, together with Bao steel and other companies. Yangzhou
Chengde has spent 10 years on the R&D of the steel pipe used in 600 ℃ Ultra-super critical coal power generation unit and
achieved the tremendous success on realizing the manufacture of such high-end
seamless steel pipe from zero to the advance level, which has filled up the
vacancy in China and broken up the foreign technological monopoly. The steel
pipe manufacturing technology of China has leaped to the international advanced
level and further confirmed the leading position of Chinese companies in
researching and making high-end special steel pipes.
Boiler Pipe
Boiler Pipe,Thermal Power Pipe,P9 Pipe,P36 Pipe
YANGZHOU CHENGDE STEEL PIPE CO.,LTD , https://www.chengdepipe.com
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