Roller blinds have strong mobility, strong shading, are not easy to age, etc., so they are loved by many people. In this case, the price issue has naturally become the most important. Let me introduce you to the roller blinds. Price and installation tips, let's take a look. Introduction to roller blinds Roller blinds are also called roll curtains. Compared to traditional fabric curtains, they are named after scrolling. They are generally used in formal occasions such as office space, office buildings, banks, schools, etc. Curtain curtains are also more used in home decoration. Roller blinds Roller blinds, which are one of the office curtains, can be divided into three types: roller blinds, spring-loaded roller blinds, and electric roller blinds. Roller blinds price There is no specific number for the price of roller blinds. Its price is different according to style, brand, fabric, etc. The curtain curtains on the market are probably around 400. How to install roller blinds The first step: measure the window frame. Step 2: Measure and determine the location of the installation code. The third step: fixed installation code. Step 4: Place the roller blinds in the correct position. Step 5: Fix the screws. Note: To retract, you must first turn the roller blind to the vertical of the wall and then pull it up; if you want to stop in the middle or stop, then pull the rope to the right 45 degrees, the entire curtain will automatically fasten. In the above, I introduced you to the roller blinds in great detail. Nowadays, the price of roller blinds on the market is still very cheap. When you are doing home decoration, you may wish to consider this type of curtains. Drilling BOP And Control System During oil drilling, it is installed on the wellhead casing head to control high-pressure oil, gas, and water blowout devices. When the oil and gas pressure in the well is high, the blowout preventer can close the wellhead (shut down). When the heavy mud is pressed into the drill pipe, there is a four-way under the ram, which can replace the mud invaded by gas, increase the pressure of the liquid column in the well, and suppress the ejection of high-pressure oil and gas. Drilling BOP And Control System,Double ram blowout preventer, single ram blowout preventer, annular blowout preventer, blowout preventer control system Rugao Yaou Import & Export Trade Co., Ltd , https://www.ntyaou.com
Its types are divided into ordinary blowout preventer, universal blowout preventer and rotary blowout preventer. The universal blowout preventer can be activated in emergency situations to deal with any size of drilling tools and empty wells; the rotary blowout preventer can realize the blowout and drilling operation. In deep well drilling, in addition to two ordinary blowout preventers, universal blowout preventers and rotary blowout preventers are often added, so that three or four combinations are installed at the wellhead.
Annular Blow-out Preventer Annular Blow-out Preventer is usually equipped with a large gate with a ram-type blowout preventer. During operation, a sealed annular space is formed between the pipe string and the wellbore. When there is a pipe string in the well, it can also be separated The well is closed, but it will not work after several times of use, and long-term shut-in use is not allowed.