What is the cause of the burst of the water supply pipe?What is the cause of the burst of the water supply pipe?
1. Hot welding cracks. Due to the limited length of pipelines, welding processes must be used to weld pipelines of different lengths in water delivery projects. If the welding parameters are inconsistent with the actual parameters of the pipeline or the welding operation of the workers is not in place, the thermal welding seam of the PE water supply pipeline may be broken. If there is no problem with the thermal welding of the PE water supply pipe, but the pipe body of the PE water supply pipe is damaged, a pressure test or pipeline quality inspection is required. If the pressure test results meet the requirements, the pipeline itself will have quality problems, such as severe brittle fracture or plastic fracture.
2. The uneven settlement of the sidewalk will cause the pipeline to be overloaded, which is also one of the reasons for the burst of the pipeline.
3. When inserting a butt joint or hot melt adhesive, if the welded joint is not completely melted and the foundation has settled, it is easy to form a burst tube. No matter what the cause of the pipe rupture, PE pipe rupture is an indisputable fact. The construction unit needs to respond quickly based on years of experience and the above analysis to find useful treatment methods, reduce losses and ensure project quality.
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Welding method and construction requirements of PE water supply pipeline
1. Hot melt is a special heating device. It heats the unconnected part of PE water supply pipe or unconnected pipe under pressure. After being melted by a thermal fusion machine, thermal fusion is performed by a thermal fusion machine. 1. Welding method: 1. Hot-melt connection 1, Hot-melt connection 1. Remove the heating device and apply pressure to connect the two molten surfaces together. After the heat fusion is completed, the joint is cooled.
2. The electric welding should make the special electric welding pipe joint and the connection part of the embedded resistance wire and PE water supply pipe or pipe fittings be in close contact, and heat the resistance wire buried before and after the connection part. Mix it together until the joints cool. Welding can be used to connect socket joints with different types and different melt flow speeds. Electric welding can be divided into electric plug connection and electric saddle connection. 3. Plug-in flexible connection PE water-supply plug-in flexible connection is welded to one end of the socket interface. The plug-in flexible connection is to insert one end of the pipe directly into the special bearing of the PE water supply pipe or fittings. Push and pull the locking ring in the bearing to tightly seal the rubber sealing ring to achieve the purpose of connection. Construction requirements: 1. The installation and construction of the water supply pipeline must be completed by a professional construction team in accordance with the engineering technical specifications, and the construction team must hold the corresponding technical certificate. 2. When mixing PE water supply pipes with different nominal pressures, pressure tests must be passed to ensure construction quality.