Not long ago, the Beijing Consumers Association announced the results of testing 45 types of shower faucets (also known as sprinklers) sold in Beijing. The results showed that some of the 25 samples of the test items did not meet the national standards. In the face of such problems, how should consumers choose the faucet? In this regard, experts said that when choosing a faucet, it must look at its durability and water-saving performance. 1. Shower faucet to buy water saving How to choose the water-saving faucet faucet The quality shower faucet has a long service life, consumers buy a shower faucet to buy water-saving. But how to choose, consumers may not know. In this regard, some experts said that you should pay attention to the inspection report of the tap. The reporter learned from the Beijing Consumers Association that in this test, many shower head products far exceed the requirements of national standards. In this regard, some experts said that faucet flow is the basic technical indicator of water saving requirements. When consumers choose a water-saving faucet, they must check their test report and buy a shower with a filter and a filter. In addition, large showers are generally more expensive than small showers and shower heads. 2. The surface should be bright It is understood that in this test, nearly one-third of the faucets have poor corrosion resistance. Experts say that you should pay special attention to the corrosion resistance when purchasing. It is understood that many faucets in the process of production, the surface of the substrate has not been processed, the plating, the impurities left in the impact on the service life of the faucet; in addition, some faucet manufacturers in order to reduce costs, shorten the plating time The thickness of the plating layer is also reduced. In this regard, some experts remind consumers that in the case of sufficient light, the surface of the faucet should be black as mirror, without any oxidized spots or burnt marks; in addition, the faucet should also have no pores, no blistering, no leakage plating, and color. Uniform; touch no burrs, sand particles by hand; used to press the surface of the faucet, the fingerprint should spread quickly, and it is not easy to adhere to scale. 3. Connect the nut to choose copper Some consumers may have encountered this situation, the shower does not see any problems on the outside, only to find that the connection nut is easy to break. In this regard, consumers must pay attention to observe the wall thickness of the connecting nut. Experts said that the quality of the shower coupling nut is very good in the process of home decoration. The connecting nut that does not meet the national standard is easy to break, and the responsibility is difficult to define. It is reported that the main reason for the shower faucet connection nut not meeting the national standard is that the connecting nut has insufficient wall thickness or is replaced by non-copper material. Therefore, consumers must choose copper nuts. In addition, the shower accessories purchased by consumers should also be made of copper. Do not buy cheap plastic parts at a time. 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.ntyaoumachinery.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.