What wire tube is used for decoration?

Plastic threading pipe is widely used in the renovation of home improvement circuit because of its advantages of low price, convenient construction and no rust. Among them, the common plastic pipe is PVC pipe, the main component of which is PVC, and other components are added to enhance its heat resistance, toughness and ductility.

When selecting PVC threading pipe, check the quality of the pipe to ensure that the protective pipe will not shrink when bending and will not crack when impacted. Firstly, check whether there are factory signs and flame retardant signs on the outer wall of the pipe; In addition, you can ignite the pipeline with fire, and then evacuate from the fire source to see if it will go out automatically within 30s; Third, try to bend the pipe 90 degrees to see if it looks smooth after bending; Fourthly, the pipeline can be struck with a hammer until the pipeline is deformed, and those who have no cracks in the impact test are qualified.

2, metal threading pipe

At home, in addition to using flame-retardant plastic pipes to protect wires, metal wires can also be used to protect pipes. For example, some residential power lines are protected by flame-retardant plastic pipes, and telephones and cable TVs use galvanized metal thin-walled pipes (which can play a shielding role). There is no need to set jumpers for the metal protective tubes of telephone and CATV transmission lines, because galvanized tubes connected with threads or sleeves can meet the shielding requirements. The common metal pipe is galvanized steel pipe, which is resistant to heat, pressure and fire.

When purchasing metal pipes, we should pay attention to the fact that the pipes should not have flat mouths and cracks, and the pipes should not have burrs. The outer diameter and wall thickness of steel pipes shall conform to relevant national standards. If there is tooth decay or brittle fracture when the steel pipe is twisted, it means that the quality of the steel pipe does not meet the requirements.