Let's take a look at the purchase and construction methods of metal threading tubes.
First of all, we have to look at whether the pipe body itself is flat, the bad pipe body may be creased, or the unevenness may be more serious, there may be cracks. This metal threading pipe is not strong and has a short life, which will affect our use. Pay special attention when purchasing.
In addition, it is necessary to see whether the cross section of the metal threading pipe is round, the inferior metal threading pipe may not be round, or the thickness may be uneven, which not only affects the use, but also causes troubles in wiring, and must pay attention when purchasing. Observed. Avoid buying poor quality metal threading tubes.
(1) The cutting of the JDG pipe shall be cut by a toothless saw or a hacksaw, and the port shall be smooth and free of burrs.
(2) When the JDG pipe is laid dark, the bending radius should not be less than 6 times the outer diameter of the pipe. In the concrete plane, the bending radius should not be less than 10 times the outer diameter of the pipe; when the JDG pipe is laid, the bending radius is not Should be less than 6 times the outer diameter of the tube. When there is only one bend between the two junction boxes, the bending radius should not be less than 4 times the outer diameter of the tube.
(3) When the JDG tube is darkly coated, the fixed point spacing is not more than 1000mm, the fixed point distance from the elbow, the junction box and the terminal spacing should be greater than 150mm, and less than 300mm.
(4) When the JDG metal threading pipe is buried in the wall or concrete, the clearance between the pipe and the wall or concrete surface shall not be less than 15mm.
(5) When the sleeved tight steel pipe is laid, the specifications of the bracket and hanger shall not be less than round steel when there is no design requirement: diameter 6mm; flat steel: 30mm*3mm: angle steel: 25mm* 25mm*3mm regulations.
(6) The pipe into the box (box) should be one pipe and one hole. The pipe diameter should be matched with the box (box) knockout hole. It is forbidden to open the hole. When piping into the box (box), the arrangement should be neat, the spacing should be even, and the box (box) should be flush with the wall.
(7) After the piping is completed, in order to prevent foreign matter from entering the tube, the end should be sealed.
(8) When pouring concrete, it should be monitored by electrician to prevent the pipeline and junction box from being shaken and displaced.
(9) After the template is removed, the pre-sweep should be carried out in time. The pipe should be fixed on the line.
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