HESUPIPE
1 HDPE pipes have low mechanical strength and are easily damaged by human factors.
HDPE pipes are not as hard as steel pipes and are easily punctured when impacted by hard objects. In order to protect HDPE pipes from human damage, red bricks and warning tapes are generally added above the HDPE pipes when laying HDPE pipes, and then the inspection of the pipelines is strengthened. When the HDPE gas pipes are constructed in advance or buried at a shallow depth, the HDPE gas pipes are easily drilled through during the construction of other supporting pipe networks or roads in the community, causing gas leakage. To avoid similar incidents, the constructed HDPE gas pipes should be monitored more closely or constructed after other supporting pipe networks, and sufficient burial depth should be ensured.
2 HDPE pipes are sensitive to thermal stability.
The compressive strength of HDPE pipes will decrease at higher temperatures; too low a temperature will cause them to become brittle. Therefore, the current general use pressure of HDPE pipes is 0.1-0.4MPa. Since PE pipes are easy to oxidize, bend, and are sensitive to temperature, there are certain requirements for the storage, handling, transportation, storage period, and construction of pipes. There are many PE pipe construction equipment and they are highly dependent on construction equipment; they have high requirements for the external environment, and it is inconvenient to construct in cold weather and windy and rainy environments, so protective measures must be taken.
3. HDPE pipes are not conductive.
This brings great inconvenience to the detection and positioning of HDPE pipelines. In view of this, the completion data must be strictly reviewed in the project, and it is imperative to ensure that the drawings are consistent with the actual situation; after the pipeline is put into operation, if the construction near the pipeline changes, the original completion drawings must be updated in time to ensure that the exact information of the underground natural gas pipeline can be grasped in time, thereby laying a good foundation for the operation and management of the pipeline.
4. Matching issues of HDPE pipe fittings.
Due to the chemical properties of HDPE pipes, it cannot be used on the ground (it cannot be used as an open pipe). HDPE water wells are large in size and inconvenient to construct in the community pipe network. HDPE pipe fittings are expensive.