The directly buried thermal insulation pipeline has the excellent characteristics of high-efficiency heat preservation, waterproof, anti-corrosion, thermal insulation, sound insulation, flame retardant, cold resistance, light capacity, high strength, simple and fast construction, and not afraid of plant root spines. It has become an indispensable material for thermal insulation, waterproof and sealing in industrial sectors such as construction, transportation, petroleum, chemical, electric power, refrigeration, etc. Directly buried thermal insulation pipe is used for various indoor and outdoor pipelines, central heating pipeline, central air conditioning pipeline, chemical industry, and other industrial pipeline insulation and cold insulation engineering, oil pipeline engineering, steam transmission pipeline engineering and other pipeline engineering. The directly buried thermal insulation pipeline can be buried in 0.6-1.2m frozen soil layer, and its heat loss can be reduced by more than 40% compared with ordinary pipeline, and its service life can be increased by more than 3-5 times compared with other thermal insulation and anti-corrosion materials, and the service life can reach 30-50 years.

1.聚氨酯硬泡具有一材多用的功能，同时具备保温、防水、隔音、吸振等诸多功能。

1. Polyurethane rigid foam has the function of one material and multi-purpose, at the same time, it has many functions such as heat preservation, waterproof, sound insulation, vibration absorption, etc.

2.保温性能，是目前国内所有建材中导热系数zui低(≤0.024)、热阻值zui高的保温材料，导热系数仅为EPS发泡聚苯板的一半。

2. Excellent thermal insulation performance, it is the thermal insulation material with low thermal conductivity (≤ 0.024) and high thermal resistance value (Zui) among all domestic building materials. The thermal conductivity is only half of that of EPS foamed polystyrene board.

3.聚氨酯硬泡体连续致密的表皮和近于100%的高强度互联壁闭孔，具有理想的不透水性。采用喷涂法施工达到防水保温层连续无接缝，形成无缝屋盖和整体外墙保温壳体，防水抗渗性能优异。

3. Polyurethane rigid foam has a continuous and dense skin and close to 100% high-strength interconnected wall, which has ideal impermeability. Spraying method is used to achieve continuous waterproof and thermal insulation layer without joint, forming seamless roof and overall external wall insulation shell, with excellent waterproof and impermeability.

4.的自黏性能(无需任何中间黏结材料),与屋面及外墙黏结牢固，抗风揭和抗负风压性能良好；整体喷涂施工，完全“热节”和“冷桥”;柔性渐变技术可有效阻止防水层开裂；机械化作业、自动配料、质量均一、施工快、周期短。

4. Super strong self-adhesive performance (without any intermediate bonding material), strong bonding with roof and external wall, good anti wind exposure and anti negative wind pressure performance; overall spraying construction, completely eliminating "hot spot" and "cold bridge"; flexible gradual change technology can effectively prevent the waterproof layer from cracking; mechanized operation, automatic batching, uniform quality, fast construction and short cycle.

5.化学性质稳定，使用寿命长，对周围环境不构成污染；离明火自熄，且燃烧时只炭化不滴淌，炭化层尺寸和外形基本不变，能有效隔断空气的进入，阻止火势的蔓延，防火性能好。

5. Stable chemical properties, long service life, no pollution to the surrounding environment; self extinguishment of open flame, and only carbonization does not drip during combustion, and the size and shape of carbonization layer are basically unchanged, which can effectively block the entry of air, prevent the spread of fire, and have good fire safety performance.

作为目前的保温防水一体化新型建材，聚氨酯硬泡保温材料在国内建筑业的应用尚处于初始阶段。可喜的是，为加快建筑保温材料的革新，促进聚氨酯硬泡在建筑领域的推广应用，建设部专门成立了“聚氨酯建筑应用工作组”,以推进聚氨酯硬泡保温防水材料在国内建筑

As the only new building material of heat preservation and waterproof integration, the application of polyurethane rigid foam insulation material in domestic construction industry is still in the initial stage. Fortunately, in order to speed up the innovation of building thermal insulation materials and promote the popularization and application of rigid polyurethane foam in the field of building energy conservation, the Ministry of construction has specially set up a "polyurethane building energy saving application working group" to promote the polyurethane rigid foam thermal insulation and waterproof materials in domestic building energy conservation