It is understood that over 80% of aluminum-plastic composite pipes are used for building water supply and radiant heating. Compared with other plastic pipes, aluminum-plastic composite pipes are more suitable for indoor small-diameter water pipes, radiant heating and floor heating, and indoor low-pressure gas pipes. Wait. Since 1997, the Ministry of Construction has restricted the use of galvanized pipes in new residential buildings. It is recommended to use new types of pipes such as aluminum-plastic composite pipes. The market of aluminum-plastic composite pipes has been active all of a sudden and has become a new investment hot spot in China within a few years. , And in early 2000 reached a higher peak of investment, once more than 20 equipment manufacturers, more than 500 aluminum-plastic composite pipe production plant, more than 500 production lines and more than 30 supporting pipe fittings production plant.
After several years of survival of the fittest and several rounds of consolidation, the industry has not experienced the ups and downs of a few years ago. Industry profits are equivalent to the average level of domestic industrial profits. Most small factories with only a few production lines have low equipment levels. The instability of product quality has gradually withdrawn from the market. New competitors have little chance of entering and will maintain stable development in the coming years.
At present, a few large companies in the industry have a perfect ISO quality certification system and supporting pipe fittings technology. Foshan Rifeng is a leading company in the industry. In 1995, the factory introduced German production lines and technologies, and also introduced German testing instruments including testing methods. In 1996, it developed special accessories and installation tools to realize aluminum-plastic composite pipe fittings and installation. Localization of tools; development of large-caliber aluminum-plastic composite pipes in 1998 to fill the domestic gap; by 2000, 47 production lines had been built, with a production capacity of 700,000 meters/day and 200,000 sets of pipe fittings per day, becoming the larger aluminum in Asia. Plastic composite pipe production base, and in 2001 with the government group "Foshan Rifeng Engineering Research and Development Center."
As China's residential construction still maintains a strong momentum of development, it is expected that by 2005, the plastic pipeline will account for more than 50% of the domestic pipeline market, and will reach 80% by 2010. In the new national policy, aluminum-plastic pipes and cross-linked aluminum The plastic pipe is listed as the preferred product in the building water supply plastic pipe, and the cross-linked aluminum plastic pipe is listed as the preferred product of the building heating plastic pipe. With the deep understanding of various new pipe materials, those have perfect product standards and application specifications. The mature products will be more easily accepted by the market.
About high speed Door Accessories:
1.Driving system: High Speed Door Servo System motor and control, motor SNMA / SEJ +reducer+flang+encoder+control box
2.Other accessories: Middle aluminium bar, bottom aluminium bar, aluminium vertical track, stainless steel vertical track, brushes,round nylon strip, PVC roll, rolling steel tube complete, drum be;;s for rolling tube, side end covers, stainless steel cover, steel tubes, air bag sensor system, safety light beam, Microwave sensor 24 Gigahertz,PVC welding machine, smoke and fire sensors, PVC transparent window, magnetic loop, photocell, remote control, manual push button, sound warning alarm Led lamp traffic light
For some main accessories, here is detain introduction:
1).24G radar sensor:
Brand: Hofic
Technology: Microwave processor
Maintain time: 0.5s
Protection: IP54
Transmitting frequency: 24.125GHz
Maximum installation height: <5meter
Transmitting power density: <5mw/cm2
Power consumption: <1W(VA)
Installation angle: 0-90°(lengthways) -30-30°(crosswise)
Supply voltage: AC&DC 12V-30V
2).Photocell:
Approval CE & ISO9001
Power supply AC/DC 12-30V
Static current 25A
Action current 40mA
Mounting distance Max 10m
NO or NC contact Done by NO./NC. contact selection
Working environment temperature -42℃ to +45℃
Working environment humidity 10 to 90%RH
Appearance dimensions( controller) 123*50*32mm(L*W*H)
Appearance dimensions(Magic eye head) 19*13mm(L*D)
3). Remote control
Operating Voltage: AC220V/50HZ+-20%
Transmit power:≤100mW;Super regenerative module, strong anti-interference
Operating temperature:-30℃-+70℃
Working frequency: 433MHZ;transmitter 1527, millions of encoding chip
Accept sensitivity:≤110dB
Manipulation method: electric remote control
Configure the quantity: Wireless number; factory configuration transmitter two. Can be equipped with PT2272 digital decoder chip
Configure the function: Up, down, stop, anti-lock full-featured reproduction
4). Magnetic loop
Voltage: 12V AC/DC +-10% 24V 115V AC+-10% 230V
Power: <2VA
Continued electrical output: 7A / 250V AC
Frequency range: 20 to 200K Hz
Response time: infinity (factory setting) or adjust maintain time
Sensitivity: 0.01% to 0.1% divided into 3 levels
Protection level: IP30
Electromagnetic compatibility (EMC) Complies with EM50081-1 and EN50082-2
Detection loop inductance: the limit of 40uH to 100uH ideal value 80uH to 300uH
Operating temperature: -25 ℃ to 70 ℃
Storage temperature: -40 ℃ to 85 ℃
Relative humidity: <90% non-condensing
Temperature compensation: automatic compensation up to 50 ℃ / h
Connection type: 11 pin DIN rail socket
Dimensions: 41 * 78 * 85 mm (width * height * length)
Weight: 250 grams
5). manual push button
This exit switch button is made of ABS and has built-in indicator light make it looks more elegant and fashionbale. It can be widely used in public entrance gates, public door, home, office, hotel, etc.
Door Exit Button Push To Exit Switch Door Opener For Access Control Security
Main Feature
Fashionable appearance
Made of ABS Plastic
Easy to install and operate
Used for access control
Specification
Mechanical Life: 500,000 test
Material: Plastic
6). Limit switch encoder
Voltage: DC5V-24V
Output voltage: high voltage≥85%Vcc, low voltage≤0.5V
Maximum mechanical speed:6000rpm
Anti-vibration: 50m/s,10-200HZ,XYZeach way 2 times.
Current consumption:≤30mA
Response frequency: 0-100KHZ
Protection: waterproof,oil proof,dust prevention, IP54
The output code system: binary code
Operating life: MTBF≥30000(+25℃,2000rpm)
Rotational inertia:4.0x10-8kgm²
Maximum load:radial direction20N
Axial direction:10N
Weight: about 0.4kg
High Speed Door Accessories,High Speed Door,Electronic High Speed Door Accessories
Shenzhen Hongfa Automatic Door Co., Ltd. , https://www.hffreezerdoor.com