Mechanical processing machine from the electric control cabinet out of the wire and cable, received the machine up, this section is the casing? Buried Or to open the ditch? Is there a standard requirement?
Look at the thickness of the time to buy with the foot, if the rupture, then the tube is not enough, now is a tube bent 90 degrees, then broken will not work.
Pvc tube to see whether the thickness of the wall conforms to the standard, with the bend pipe test tube can bend
PVC pipe or galvanized pipe? The easiest way is to do bend test, PVC pipe does not burst, galvanized pipe is not deflated on the basic quality of qualified.
