50pe threading tube how to connect, such as to be buried 50 meters PE pipe, the connection between each pipe how to do, with what materials or tools.
Use a 1mm or so wire, the head of a small circle (not too large, try to keep the surface smooth), use it first through the line, and then with the line can be.
Production enterprises, workshop machines with more than ten thousand cable, should be credited to what subjects, or the cost of this machine together with the fixed assets into the machine.
WDZ is a low smoke halogen-free flame retardant is through the halogen content, pH conductivity and single burning test of the halogen content is low but the electrical performance is not so much for fire protection requirements higher occasions but not for household ZR is resistance Fire is required to burn the test by the combustion of NH is refractory to fire through fire resistance classification There are many kinds of national standard fire resistance is divided into a simple fire for fire and mechanical shock with fire, there are BS standard fire in addition to the above two refractory also There are fire with water spray through these tests can be basically judged what the cable applied to what occasions
