The welding of Welded Steel Pipe is an important process in the construction process. At present, there are two common welding methods: thermal shrinkage belt and electric hot melt sleeve.
1: heat contraction zone
Sleeve joint: in this way, the joint sleeve is made of polyethylene sleeve with the same material and density as the thermal insulation steel pipe, and the heat shrinkage belt is used to connect and seal the polyethylene joint sleeve and the main pipe to ensure the water tightness of the joint. Then foam the joint through the foaming hole on the joint sleeve. After foaming, use high-density polyethylene to seal the foaming hole through patch or hot melt welding.
2: electric hot melt sleeve
In this welding method, the sleeve with embedded resistance wire is used. The hot melt sleeve is tightly tied to the outer sleeve with binding tape, and then the power supply is switched on and the welding starts. The welding time is set in advance.
