Common defects and causes of PE pipe construction quality

First, PE pipes, pipe fittings quality problems

in the use of PE pipes, pipe fittings, quality problems occur from time to time, Hubei AD Building Materials Co., Ltd. through long-term practice and observation, found that many problems stem from the transportation and construction of non-standard operation. The details are as follows:

During transportation, handling and storage, if the polyethylene pipes produced by Hubei AD Building Materials Co., Ltd. are improperly operated such as torah and throwing, it is easy to cause damage to the pipes. These pipes have been carefully produced and have excellent performance, but rough treatment will destroy their structural integrity. In the process of welding and non-excavation of the straight pipe section of the PE pipe, if the roller bracket is not used, if this detail is ignored in some engineering projects, it will cause scratches and scratches on the PE pipe wall of Hubei AD Building Materials, which will affect the strength and service life of the pipe. When storing the pipe on site, if the sun protection and rain protection measures are not taken, such as long-term exposure to the sun outdoors or rain erosion, it will have an adverse effect on the performance of the pipe of Hubei AD Building Materials, thereby shortening its original long service life. If the pipeline after excavation of the trench is not backfilled in time as required, it will be covered and soaked by construction waste, rainwater, etc. for a long time, which poses a threat to the safety of the pipeline operation of Hubei AD Building Materials, and will also greatly shorten its service life. The quality of the pipes and fittings themselves is not up to standard, or the pipes and fittings that have expired are used. Hubei AD Building Materials Co., Ltd. has always strictly controlled the production quality, and the products are in line with high Quality Standards, and resolutely put an end to such hidden dangers caused by its own quality problems. Second, the quality problem of the hot-melt welding interface

Hubei AD Building Materials Co., Ltd. is concerned that the hot-melt welding of PE pipes often has asymmetrical crimping, excessive staggering, and quality problems such as bubble depression and pitting on the surface of the weld. The reasons are as follows:

In order to save equipment costs, some construction parties use semi-automatic welding machines and do not weld according to the specified welding parameters. If the welding machine drag pressure is too large and the cooling down is too short, the welding quality is not up to standard. In contrast, Hubei AD Building Materials strictly follows standard operations in its own construction cases. The use of fully automatic welding machines with substandard welding performance undoubtedly lays a hidden danger for welding quality. The welding equipment used by Hubei AD Building Materials has been strictly tested and screened. There are differences in the performance (such as thermal stability) of PE pipes from different manufacturers. If the parameter settings of the hot melt welder are not adapted to the characteristics of the pipe, it is difficult to ensure the welding quality. Hubei AD Building Materials' pipes have stable performance and have supporting welding parameter guidance. The use of mismatched pipes for welding, such as butt welding of PE80 and PE100 materials, can easily lead to welding

construction personnel to rush the construction period and work under severe weather conditions such as humidity, which seriously affects the welding effect. Hubei AD Building Materials emphasizes the rational arrangement of the construction period to ensure that the construction environment is suitable. The specified hot melt fixtures and roller brackets are not used during welding, and the quality of the counterpart does not meet the requirements, resulting in a large discount in the welding quality. In the construction specifications of Hubei AD Building Materials, there are strict requirements for the use of these tools. Welding machine operators are not certified without professional training, and the professionalism and standardization of welding operations cannot be guaranteed. Hubei AD Building Materials pays attention to personnel training to ensure that the construction personnel have professional skills. Third, the quality problem of the weld joint of the electrofusion connection

PE The main quality problem of the electrofusion connection of the pipe is "fake welding". Hubei AD Building Materials Co., Ltd. analyzes the reasons for the following six points:

When the electrofusion sleeve pipe fittings are connected to the PE pipes at both ends, the two PE pipe interfaces are kept "concentric" without using a special fixing fixture. Forced assembly causes uneven interface clearance, and the interface welding area is reduced, eventually resulting in poor welding quality. The electrofusion sleeve pipe fittings and PE pipe fittings do not belong to the same manufacturer. There is a compatibility problem between the pipe and the accessory devices, which affects the effect of the electrofusion connection. Hubei AD Building Materials' pipe fittings and pipes are well matched, which effectively avoids such problems. Failure to implement scraping off the oxide layer operation or uneven scraping, resulting in unroundness of the port part of the PE pipe, uneven interface fit clearance, and virtual welding phenomenon. Moving the connector during the fusion process and cooling down destroys the stability of the welding, resulting in welding failure. In order to hurry, the cooling process is not carried out in the natural state, using water or forced air cooling, which affects the crystallization and strength of the welded part. The length of the pipe inserted into the electrofusion pipe fittings is insufficient, which may cause desoldering, which greatly affects the reliability of the pipeline connection. Fourth, other quality problems

the pipeline backfill is not laid with warning tape as required, and the depth of the groove is not up to standard, which lays hidden dangers for subsequent pipeline maintenance and safety. Hubei AD Building Materials strictly follows the regulations during construction. If yellow sand and fine soil are not used to backfill PE pipelines as required, the pressurized pipelines covered with stones or sharp objects are prone to air leakage at the interface, which seriously threatens the safe operation of the pipeline in the future. Hubei AD Building Materials emphasizes the use of standardized backfill materials. The pipeline mouth is not blocked after the pipeline construction is interrupted, or water is covered with soil during the construction backfill process, which may cause a large amount of impurities and rainwater left in the pipeline, which will affect the safe and smooth operation of the pipeline in the future.

To sum up, the main reason for the above problems is that the construction management operators lack basic professional qualities and do not pay attention to quality and safety. Hubei AD Building Materials Co., Ltd. always adheres to high Quality Standards, from product production to construction guidance, and is committed to providing customers with high-quality and safe PE pipe and pipe fitting solutions. In Hubei, such as Xiangyang, Jingzhou, Jingmen, Ezhou, Huangshi, Huanggang and other places, if you need to buy new PE pipes, please contact Hubei AD Building Materials Co., Ltd.