聚氨酯保温管道是一种具有防腐性能的钢管，并且具有良好的保温性能，在建筑施工中得到广泛的使用和推广，并且在不断的进行完善和普及。防腐保温钢管具有不同的加工种类和方法，不同的加工方法确定了钢管具有不同的性能和功能，而且使用范围也会随之改变。管道保温层越厚，则管路散热损失越小，节约了燃料；但厚度加大，保温结构费用增加。“经济保温厚度”就是综合考虑管道保温结构的和管道散热损失的年运行费用两者因素，折算得出在一定年限内其“年计算费用”为*小时的保温层厚度。
直埋保温管不仅具有传统地沟和架空敷设管道难以比拟的先进技术、实用性能，而且还具有显着的社会效益和经济效益，也是供热节能的有力措施。预制聚氨酯保温管式保温管一种是由输送介质的钢管、高密度聚乙烯外套管以及钢管和外套管之间填充的聚氨酯硬泡保温层紧密结合而成。只需将除锈防腐后的钢管套在聚乙烯套管内，中间注入聚氨酯泡沫，使之充分填满钢管与聚乙烯套管之间的空隙，最终使钢管、套管、保温层形成一个牢固的整体，达到防腐保温的效果；这种防腐保温方式可以架空或者埋在地下，整个施工过程均可在现场进行。
聚氨酯保温钢管
polyurethane heat preservation pipe is a kind of steel pipe with corrosion resistance and good heat preservation performance. it has been widely used and popularized in construction and is continuously being perfected and popularized. the anti-corrosion and heat preservation steel pipe has different processing types and methods. different processing methods determine that the steel pipe has different properties and functions, and the scope of use will also change accordingly. the thicker the insulation layer of the pipeline, the smaller the heat dissipation loss of the pipeline, thus saving fuel. however, as the thickness increases, the investment cost of the insulation structure increases. the economic insulation thickness is the insulation thickness of * hours in a certain period of time after considering both the investment in the insulation structure of the pipeline and the annual operating cost of the heat dissipation loss of the pipeline. the directly buried insulation pipe not only has the advanced technology and practical performance that the traditional trench and overhead laying pipelines cannot match, but also has significant social and economic benefits, and is also a powerful measure for energy saving in heating. one of that prefabricate polyurethane heat preservation pipe type heat preservation pipes is for by tightly combining a steel pipe for conveying a medium, a high-density polyethylene outer sleeve and a polyurethane rigid foam heat preservation lay filled between the steel pipe and the outer sleeve. only the steel pipe after rust removal and corrosion prevention needs to be sleeved in the polyethylene sleeve, polyurethane foam is injected in the middle, so that the gap between the steel pipe and the polyethylene sleeve is fully filled, and finally the steel pipe, the sleeve and the heat insulation layer form a solid whole, thus achieving the effect of corrosion prevention and heat insulation; this anti-corrosion and heat preservation method can be overhead or buried underground, and the whole construction process can be carried out on site.
河北诚源管业集团有限公司（销售部）
18931746104