1、硬质直埋保温管的导热系数并不是那么太高，热工性能表现稳定。当硬质直埋保温管容暮为35～40kg/m3时，导热系数仅为0.018g~0.023w/（m.k），约相当于EPS的一半，是目前一切保温资料中导热系数低的。
1. The thermal conductivity of rigid directly buried insulating pipe is not so high, and its thermal performance is stable. When the dusk holding capacity of rigid directly buried insulating pipe is 35-40kg/m3, the thermal conductivity is only 0.018g-0.023w/(m.k), which is about half of the EPS, and is the lowest in all the current thermal insulation data.
2、硬质直埋保温管具有防潮、防水性能。硬质直埋保温管的闭孔率在90％以上，属于憎水性资料，不会因吸潮增大导热系数，墙面也不会渗水。
2. Hard directly buried insulating pipe has moisture-proof and waterproof properties. Hard directly buried insulating pipe has a closed porosity of more than 90%, which is hydrophobic material. It will not increase the thermal conductivity due to moisture absorption, and the wall will not seep.
3、硬质直埋保温管防火，阻燃，耐高温的优势特性显露无疑。直埋保温管在添加阻燃剂后，更是成为一种难燃的自熄性资料，它的软化点虽然相关技术测算可以高达250摄氏度以上，仅在较高温度时才会呈现合成：另外，直埋保温管在熄灭时会在其泡沫外表构成灰，这层灰有助隔离下面的泡沫。能有效地避免火灾蔓延。而且，直埋保温管在高温下也不产生有害气体。
3. Hard directly buried insulating pipe has the advantages of fire-proof, flame-retardant and high temperature resistance. Directly buried thermal insulation pipes, after adding flame retardants, become a kind of inflammable self extinguishing data. Although softening points can be up to 250 degrees Celsius, the softening points can be synthesized only at higher temperatures. In addition, directly buried thermal insulation pipes will form ash on the foam surface when they are extinguished, which will help isolate the foam below. It can effectively avoid the spread of fire. Moreover, direct buried insulating pipes do not produce harmful gases at high temperatures.
4、由于直埋保温管板材具有优良的隔热性能，在到达同样保温请求下，可使减少建筑物外围护构造厚度，从而增加室内运用面积。
4. Because of the excellent thermal insulation performance of the directly buried heat preservation tube sheet, the thickness of the building envelope can be reduced and the indoor application area can be increased when the same heat preservation request is reached.
5、抗变形才能强，开裂的不良现象不容易呈现，饰面的终效果十分优良。
5. The anti-deformation ability is strong, the bad phenomenon of cracking is not easy to appear, and the final effect of finishing is excellent.
6、直埋保温管资料孔隙率的构造性能稳定，由于它根本上采用的是闭孔构造，这样一来保温性能变得非常好，而且抗冻融、吸声性效果非普通。硬泡直埋保温管保温结构的均匀运用年限，假如没有什么不测状况发作能够到达30年以上。可以做到在构造的寿命期正常运用条件下，在枯燥、湿润或电化腐蚀，以及由于昆虫、真菌或藻类生长或者由于啮齿动物的毁坏等外因影响，都不会遭到毁坏。
6. The structure of porosity of directly buried insulating pipe data is stable. Because it basically uses closed-hole structure, the thermal insulation performance becomes very good, and the effect of freeze-thaw resistance and sound absorption is not ordinary. The uniform service life of the rigid foam direct-buried insulation pipe insulation structure can reach more than 30 years if there is no unexpected situation. It can be achieved that the structure will not be destroyed under normal operation conditions, such as dry, wet or electrochemical corrosion, growth of insects, fungi or algae or destruction of rodents.
7、综合性价比低。固然硬质直埋保温管泡沫材的单价比其它传统保温资料的单价高，但增加的费用将会由供暖和制冷费用的大幅度减少而抵消。
7. Low comprehensive price ratio. Although the unit price of rigid and directly buried insulation pipes is higher than that of other traditional insulation materials, the increased cost will be offset by a substantial reduction in heating and cooling costs.
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