High Strength Steel Tie Rod are steel structural members made of carbon structural steel and alloy steel, processed by machining, heat treatment and surface anti-corrosion treatment, supplemented by adjusting sleeves, lock and joints etc. The steel tie rod are important components of steel structures for construction of giant, large span buildings and ship docks. They are mainly used for prestressed parts and large span buildings in construction projects. While the strength of the product is improved, but the plasticity index is not reduced, which satisfies the principle of using the same amount of strength in the architectural design. The tie rods, tie bars, tension rods and tension bars steel grades are specified as , grade 785, grade 830, grade 930, grade 1080 etc. Post Tension Bar,Tie Bar Construction,Post Tension Rods,Post Tension Bar For Bridge SHANDONG LE REN SPECIAL STEEL CO., LTD. , https://www.js-luggagecarts.com
Monitoring quotes has always been a question frequently asked by security friends, because after all, each project is different, the way of quotation is different, this article will talk to you about monitoring the quotation.
Monitoring installations Our general main charges are two:
The first is to calculate by point, this is a project for small monitoring.
The second type for large-scale monitoring projects, according to the percentage of equipment, generally we take 15%-20%, the larger the project, the smaller the proportion.
A small-scale construction requires a point between 150 and 300. If the standard construction process, the main material such as cable is not lower than 300 points, some constructions are difficult to spread to more than 500 yuan. higher.
The current national standard for camera installation is between 70 and 80, the bracket is installed 30~40, the manual lens also includes the debugging of the lens, and the overall debugging of the split debugging can be ignored. Cable laying is 250~300 yuan/100 meters depending on the type of wire diameter.
Too high (5 meters or more) will also increase the labor cost by 3 to 4%, and the upper level will increase the fee.
Then talk about the choice of monitoring equipment
1. After determining the installation location, calculate the number of cameras installed. The clarity of the camera and the need for night vision are a way to differentiate prices. The definition of clarity is not high, and no night vision function is required. According to the quality, the price of the camera generally needs 200-300 yuan, while the camera with higher requirements may need 300-600 yuan.
2. Select to install a hard disk recorder to store and control the information collected by the camera. It is generally not recommended to install the monitoring card directly with the computer. Because the camera needs to be used for 24 hours, the computer must be turned on 24 hours, which is not good for computer cooling and virus prevention. It is recommended to install DVRs. There are many brands of hard drives available, ranging from 100 to 700 yuan. Dahua, Hikvision, etc. can be selected according to their needs. Remember to distinguish between on-site monitoring and network monitoring, so you should decide whether to choose a hard disk recorder with network function.
3, the price range of the display is wider, there are many TV computer manufacturers, the quality, size and clarity of the display are all diversified, and are determined according to personal preferences and needs. The general display can be fixed at 3,000 yuan, and the multi-screen display of several tens of inches may vary by several thousand yuan depending on the brand!
4. The choice of the line is also a factor affecting the price. You can use direct routing or use wireless routing. Of course, wireless is more expensive, and the transmitted signal is susceptible to physical factors. It is recommended to use direct wiring. Determine the cable length based on actual usage. Brand and quality also determine the price, generally 200-400 or so can be done.
5, Finally, to see whether it is installed or need to ask the workers to install, this is a fee, the general installation fee needs a point of about 200-350.