When the HDPE double wall corrugated pipe exhibits a slight water leakage condition, it can be repaired by welding.
Firstly, in the upstream of the pipeline, the rainwater will be pumped out early through the observation well, and then the damaged part of the pipeline will be exposed to the ground. After the special welding rod, the damaged orientation will be heated and welded by the hot air gun, which can effectively treat the slight leakage of the HDPE double wall corrugated pipe. .