The type of PVC pipe.PVC pipe is that common people know well acquainted PVC polyvinyl chloride from the word stands as a type of plastic that has many great features, such as with the elastic. Water pressure resistance Dai good corrosion resistance of alkali, acid or good. Use a good electrical insulation because it is not as conductive as a non-flammable material. It helps to smooth the flow of water is lighter and cheaper, but there are some drawbacks, such as no brittleness resistance to shocks. UV light resistant, not because it will make the frame and PVC pipe has broken the popular used in construction is also divided into 3 types, namely pipes, tubes and hoses, yellow blue gray. 1. PVC pipes are manufactured according to the standard blue tis a popular band tube 17-2532 (1989) used in sanitary work in buildings, such as the water supply hose is used, which must be used with water or pressure water pump system, which must be selected using a standard PVC pipe size or PVC-8.5-13.5. But if use as sewer or sewage pipes, water pressure, which do not have the option of using the standard size tube PVC-5 tube PVC-5, which is PVC-8.5 and PVC-13.5 can specify phanai receiving pressure pipe. There the unit is kg/square cm PVC pipe blue suitable for use indoors or in the shade only. It should not be used outside buildings that need exposure to sunlight and should not be used to communicate with the buildings collapse easily because it will cause pipe is broken or torn away from each other. 2. PVC pipes are manufactured according to the standard yellow TIS 216-2524 (1981) tubes for use in electrical conduit or a telephone line specifically. Consideration of electric insulation standards. PVC pipe yellow cords suitable for use indoors or in the shade, only cords should not be used outside of the building, because the rules of the spikes are not allowed. 3. grey PVC pipe PVC pipe is the pipe that gray produced for the purpose of agricultural drainage or sewage or drainage using drainage in the temporary jobs that do not require water pressure or strength of the pipe too much. Thus, the standard is not yet defined, depending on the manufacturer, but if used in the drainage industry. Need to take into consideration environmental safety, for example, there may be a chemical or poison, which vented, it tube to use standards-based TIS 999-2533 (1990)
การแปล กรุณารอสักครู่..