How to choose a household threading tube
The threading pipe can be used not only in the outdoor cable erection process, but also in daily life. The laying of the circuit in the home also uses a threading tube, which is a protective device for the cable. Let's take a look at how to choose a household threading tube.
Threading tubes are used in indoor normal environments and in locations subject to high temperatures, dust, vibration and fire hazards. It can also be used in wet places. Do not use in locations that are particularly wet, acid, alkali, salt corrosive and explosive. The ambient temperature is -15 ° C ~ +40 ° C. Excellent mechanical properties of the threading tube. Excellent corrosion resistance, high pressure resistance of the threading pipe and working pressure exceeding 2.5Mpa. The threading pipe has a smooth surface, small fluid resistance, no scaling, and is not suitable for breeding microorganisms. The coefficient of thermal expansion is small and does not shrink and deform. Traditional installation connection. The epoxy coating layer of the threading pipe is more effective in solving the corrosion of metal pipes caused by water, buried and acid, alkali and salt, and the service life can reach more than 50 years.
For fire prevention, maintenance and safety, it is best to use copper core wire. The wire slot area is generally: 1.5 square millimeters for lighting, 2.5 square millimeters for socket, and 2.5 square millimeters for air conditioning. Green and yellow two-color line, connected to the switch line (fire line) with red, white, black, purple and so on. However, the color usage of the lines used in the same home improvement project should be consistent.
How to choose the threading pipe: The threading pipe should be applied with a flame-retardant PVC pipe. The surface of the pipe wall should be smooth, and the wall thickness should meet the strength of the finger without breaking, and there should be a certificate of conformity. It is also possible to use a special galvanized pipe of the national standard as a threading pipe.
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