The characteristics of polyurethane foam used as insulating layer of prefabricated directly buried insulatingpipe are introduced.
介绍了作为预制直埋保温管保温层的聚氨酯泡沫塑料的特性。
2
High strength prestressed heat barrier pipe is used as a thermal insulatingpipe to carry high temperature and pressure vapour into underground for crude oil exploitation.
材质为高强钢的预应力隔热管是在石油开采中用于地下输送高温高压水蒸汽的绝热管。
3
Findings show that, for be in the wrong frozen soil wrought in favor of thermal disturbance, insulating layer thickness respond adopt dam insulatingpipe hull skin temperature 'calculation procedure.