Q: What is a drainage system inspection well anti-fall device? A: Drainage system inspection well fall prevention device: The wellhead was marked with six to eight expansion screws, and then the fall prevention net was connected with an openable metal ring, and the fall prevention net was stuck on the wellhead. If it comes to the inspection of the municipal staff, the anti-dropping net can be easily removed. After this kind of net was installed at the wellhead, there was no problem for two people to stand on it. This type of anti-fall net is made of polyethylene and can withstand a weight of 300 kg. The effective use period is up to four years. The box culvert of the city is about four to five meters deep. If it hits a manhole cover, or if the manhole cover is lost or the road area is raining, people may fall into it. Glass ceramics, also known as glass-ceramics, are a composite of a combination of crystalline phase and glass that has been produced by high temperature melting, forming, and heat treatment. It has excellent mechanical strength, thermal expansion performance, thermal shock resistance, chemical resistance, low dielectric loss and other superior properties.Glass ceramics are widely used in machinery manufacturing, optics, electronics and microelectronics, aerospace, chemical, industrial, biomedical and construction. Due to the complicated manufacturing process and high technical requirements of the glass ceramic panel, the high-quality glass ceramic production process and control technology are basically monopolized by foreign countries. Therefore, the domestic glass ceramic production process has problems of poor quality and low yield. Macor Ceramics,Machinable Glass Ceramics,Glass Ceramic Round Disc,Machinable Glass Ceramic Tube,Glass Alumina Ceramic Block Dongguan Haikun New Material Co., Ltd. , https://www.hkceram.com