The design of directly buried heating pipeline with large diameter is summed up, and its operation result is better.
总结了大管径直埋供热管道的设计，运行效果良好。
Anticorrosion of heating bend pipes is a problem all along in buried pipeline construction. It affects directly the service life of the pipeline.
热煨弯管的防腐一直是埋地管道防腐的薄弱环节，直接影响管道的使用寿命。
The directly buried installation has been applying in the heating pipeline more and more.
直埋敷设方式越来越广泛的应用于供热管道的敷设中。
The directly buried installation has been applying in the heating pipeline more and more.
直埋敷设方式越来越广泛的应用于供热管道的敷设中。
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