聚氨酯直埋管的经济性及其应用

介绍了聚氨酯直埋管的特点、加工及现场施工工艺，分析了采用直埋管与采用砌筑暖沟岩棉保温两种方法所用的投资及工期，认为在达到同样保温效果的前提下，采用直埋管可缩短工期、减少材料浪费、减少岩棉对人体危害，且工艺简单，施工方便。

Economy and application of direct burried polyurethane pipes

Presents the property, making and construction in situ of the direct burried polyurethane insulation pipe. Compares its capital costs and construction period with those of the rockwool insulated pipe in brickwork pipe ducts to similar insulation effects. Holds that employing direct burried pipe can shorten construction cycle, save material used and reduce adverse effects to the environment.