The main properties of RPM pipe are introduced and compared with the properties of the plastic pipe, steel pipe, ductile iron pipe and reinforced concrete pipe.
本文介绍了RPM管的主要性能，并与塑料管、钢管、球墨铸铁管及钢筋混凝土管的相应性能作了分析和比较。
In Terminal T3B Project of Beijing Capital International Airport, the reinforced concrete ring beam is a type of transfer beam supporting gigantic steel pipe columns.
北京首都国际机场新航站楼t3b工程中，钢筋混凝土环形梁是支撑巨型钢管柱的转换梁。
At present, the common underground pipelines are steel tube, reinforced concrete pipe, and PVC hard plastic tube. The cost of them is much high and it is also difficult to lay out.
目前常用的地埋管有钢管、钢筋混凝土管、PVC硬塑料管，这些管道的成本都较高，且施工难度大。
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