1. Reduce the cost of construction.

據(jù)有關(guān)部門測算，雙管制供熱管道，普通狀況下能夠降低工程造價的25％（采用玻璃鋼做維護層）和10％（采用高密度聚乙烯做維護層）左右。

According to the calculation of relevant departments, double-pipe heating pipeline can reduce the cost of construction by 25% (using FRP as maintenance layer) and 10% (using high-density polyethylene as maintenance layer) under normal conditions.

2、熱損耗低，節(jié)約能源。

2. Low heat loss and energy saving.

其導(dǎo)熱系數(shù)為：λ＝0.0130.03kcal／m?h?oC，比其他過去常用的管道保溫資料低得多，保溫效果進步4~9倍。再有其吸水率很低，約為0.2kg／m2.吸水率低的緣由是由于聚氨酯泡沫的閉孔率高達92％左右。低導(dǎo)熱系數(shù)和低吸水率，加上保溫層和外面防水性能好的高密度聚乙烯或玻璃鋼維護殼，改動了傳統(tǒng)地溝敷設(shè)供熱管道“穿濕棉襖”的情況，大大減少了供熱管道的整體熱損耗，熱網(wǎng)熱損失為2％，小于10％的規(guī)范請求。

Its thermal conductivity is from 0.013 to 0.03kcal/m?H?OC, which is much lower than other commonly used pipeline thermal insulation data, and the thermal insulation effect is improved by 4-9 times. Another reason is that its low water absorption rate is about 0.2kg / m2.. The reason is that the obturator rate of polyurethane foam is as high as 92%. Low thermal conductivity and low water absorption, together with high density polyethylene (HDPE) or fiberglass reinforced plastics (FRP) maintenance shell with good insulation layer and external waterproofing performance, have changed the situation of traditional trench laying heating pipeline "wearing wet cotton jacket", greatly reducing the overall heat loss of heating pipeline, the heat loss of heating network is 2%, less than the international norm request of 10%.

3、防腐，絕緣性能好，運用壽命長。

3. Anti-corrosion, good insulation performance and long service life.

高溫預(yù)制直埋保溫管由于聚氨酯硬質(zhì)泡沫保溫層嚴密地粘結(jié)在鋼管外皮，隔絕了空氣和水的滲入，能起到良好的防腐作用。同時它的發(fā)泡孔都是閉合的，吸水性很小。高密度聚乙烯外殼、玻璃鋼外殼均具有良好的防腐、絕緣和機械性能。因而，工作鋼管外皮很難遭到外界空氣和水的腐蝕。只需管道內(nèi)部水質(zhì)處置好，據(jù)國外材料引見，高溫預(yù)制直埋保溫管的運用壽命可達50年以上，比傳統(tǒng)的地溝敷設(shè)、架空敷設(shè)運用壽命高3~4倍。

The high temperature prefabricated directly buried insulation pipe is tightly adhered to the outer skin of the steel pipe because of the rigid polyurethane foam insulation layer, which can isolate the infiltration of air and water, and can play a good anti-corrosive effect. At the same time, its foaming holes are closed and its water absorption is very small. High density polyethylene shell and FRP shell have good anti-corrosion, insulation and mechanical properties. Therefore, it is very difficult for the outer skin of the working steel pipe to be corroded by the external air and water. According to foreign materials, the service life of high temperature prefabricated directly buried insulating pipes can reach more than 50 years, which is 3-4 times longer than that of traditional trench laying and overhead laying.

4、占地少，施工快，有利環(huán)境維護。

4. It occupies less land, constructs quickly and maintains favorable environment.

直埋供熱管道不需求砌筑龐大的地溝，只需將保溫管埋人公開，因而大大減少了工程占地，減少土方開挖量約50％以上，減少土建砌筑和混凝土量90％。同時，保溫管加工和現(xiàn)場挖溝平行停止，只需現(xiàn)場接頭，能夠縮短工期約50％以上。

Directly buried heating pipelines do not need to build huge trenches. They only need to bury insulating pipes openly, which greatly reduces the construction area, reduces the amount of earthwork excavation by more than 50%, and reduces the amount of civil masonry and concrete by 90%. At the same time, the processing of insulating pipes and digging ditches on site are stopped in parallel, and the construction period can be shortened by more than 50% with only on-site joints.

5、平安。

5. Peace.

可依據(jù)客戶請求裝置滲漏報警線，一旦管道某處發(fā)作滲漏，經(jīng)過報警線的傳導(dǎo)，便可在專用檢測儀表上顯現(xiàn)出保溫管道滲水、漏水的精確位置及滲漏水平的大小，以便通知檢滲人員疾速處置漏水的管段，保證供熱管網(wǎng)的平安運轉(zhuǎn)。如今我們也能夠自主消費制造帶預(yù)警線的直埋保溫管，補償了之前無預(yù)警系統(tǒng)的這一空缺。

The leakage alarm line can be set up according to the customer's request. Once the leakage occurs somewhere in the pipeline, through the transmission of the alarm line, the exact position and leakage level of the insulation pipeline can be displayed on the special detection instrument, so as to inform the inspectors to quickly dispose of the leakage pipeline section and ensure the safe operation of the heating pipeline network. Now we can also manufacture directly buried insulating pipes with early warning line by ourselves, which compensates for the vacancy of no early warning system before.