Research Article
Failure Mode and the Prevention and Control Technology of Buried PE Pipeline in Service: State of the Art and Perspectives
Table 2
Distributions of main leakage points for steel and PE pipes.
| Locations | Steel pipes | PE pipes |
| Joints | Welding interface, tee interface, elbow interface, all kinds of wiring points | Conversion joint between steel pipes and PE pipes | Piercing points | Corrosion perforation points | Thermal fusion welding points | Cracking points | Welding point cracking | Aging damage points | Other points | Underground gas facility interface | ā |
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