In electrical engineering, the commonly used wire conduits are mainly metal and plastic wire and tube, and their classification is also different. The following symbols are commonly used for the marking of pipes in engineering drawings: SC: welded steel pipe; JRC: water gas steel pipe; MT: black iro... Read More
The full name of PVC is Polyvinylchlorid, whose main component is polyvinyl chloride. In addition, other proportioning ingredients are added to enhance its heat resistance, toughness and ductility. The uppermost layer of this surface film is lacquer, the main component in the middle is polyvinyl chl... Read More
