Polyurethane direct-buried insulation pipe has many excellent characteristics, such as thermal insulation, waterproof, anticorrosion, insulation, sound insulation, flame retardant, cold resistance, anticorrosion, light capacity, high strength, complicated and fast construction, not afraid of plant thorns and so on. It has become an indispensable material for thermal insulation, waterproof, leak plugging and sealing of industrial departments such as construction, transportation, petroleum, chemical industry, electric power, refrigeration, etc. Directly buried insulation pipes are used in various indoor and outdoor pipelines, central heating pipelines, air conditioning pipelines, chemical industry, medicine and other industrial pipelines for heat preservation, cooling engineering, oil pipeline engineering, steam transportation and other pipeline engineering.

直埋保溫管自三十年代聚氨酯合成資料降生以來，不斷作為一種優(yōu)良的絕熱保溫資料而得到疾速開展，其應(yīng)用范圍也越來越普遍，由于其施工煩瑣、防腐效果顯著。聚氨酯保溫管普遍用于液體、氣體的保送管網(wǎng)，化工管道保溫工程石油、化工、集中供熱熱網(wǎng)、空調(diào)通風(fēng)管道、市政工程等。直埋保溫管是一種保溫性能好，愈加牢靠，工程造價(jià)低的直埋預(yù)制保溫管。

Since the birth of polyurethane synthetic data in the 1930s, direct-buried thermal insulation pipe has been developed rapidly as an excellent thermal insulation material, and its application scope is becoming more and more widespread, because of its cumbersome construction, energy-saving and anticorrosive effect is remarkable. Polyurethane insulation pipes are widely used in liquid and gas pipeline network, chemical pipeline insulation engineering petroleum, chemical industry, central heating network, air conditioning and ventilation pipeline, municipal engineering, etc. Direct-buried insulating pipe is a kind of prefabricated insulating pipe with good thermal insulation performance, more reliable and low cost.

直埋保溫管不只具有傳統(tǒng)地溝和架空敷設(shè)管道難以比較的技術(shù)、適用性能，而且還具有顯著的社會(huì)效益和經(jīng)濟(jì)效益，也是供熱的有力措施。預(yù)制直埋保溫管采用直埋供熱管道技術(shù)，標(biāo)志著我國(guó)供熱管道技術(shù)開展曾經(jīng)進(jìn)入了新的起點(diǎn)。聚氨酯預(yù)制直埋保溫管采用的預(yù)先訂制，它 愈加有利于保溫管應(yīng)用的實(shí)踐消費(fèi)生活中，具有很大的靈敏性和順應(yīng)性，能夠依據(jù)不同需求，設(shè)計(jì)不同參數(shù)的直埋保溫管。

Direct buried insulation pipe not only has the technical and applicability performance that is difficult to compare with traditional trench and overhead pipeline laying, but also has significant social and economic benefits. It is also a powerful measure of heating energy saving. Prefabricated directly buried insulating pipes adopt the technology of directly buried heating pipes, which indicates that the technology of heating pipes in China has entered a new starting point. Prefabrication of polyurethane prefabricated directly buried insulating pipes is more conducive to the practical consumption of insulating pipes. It has great sensitivity and compliance, and can design directly buried insulating pipes with different parameters according to different needs.

聚氨酯螺旋保溫管價(jià)錢方面是在保溫管的構(gòu)造和性能。聚氨酯預(yù)制直埋保溫管的構(gòu)造采用由里到外依次有內(nèi)維護(hù)層、保溫層、外維護(hù)層。內(nèi)維護(hù)層是保送介質(zhì)的鋼管，具有耐腐蝕性和防水性能好等特性。鋼管和外維護(hù)層之間的硬質(zhì)聚氨酯泡沫保溫層采用管中管發(fā)泡技術(shù)使三者嚴(yán)密分離而成。外維護(hù)層是度聚乙烯外套管?？偟恼f來，聚氨酯預(yù)制直埋保溫管的保溫隔熱性能比傳統(tǒng)保溫管愈加優(yōu)良，保溫保冷的效果更好。

The price of polyurethane spiral insulating pipe is the structure and performance of insulating pipe. The structure of polyurethane prefabricated directly buried insulating pipe is composed of internal maintenance layer, thermal insulation layer and external maintenance layer from inside to outside. The inner maintenance layer is a steel pipe with delivery medium, which has good corrosion resistance and waterproof performance. The rigid polyurethane foam insulation layer between the steel tube and the outer maintenance layer is made by the tube tube foaming technology, which makes the three parts closely separated. The outer maintenance layer is the degree polyethylene outer sleeve. Generally speaking, the thermal insulation performance of polyurethane prefabricated directly buried insulating pipes is better than that of traditional insulating pipes, and the effect of thermal insulation and cooling is better.