聚氨酮直埋保温管特点：

使用了导热系数低、隔热性能好的硬质聚氨酮作为隔热材料，具有优异的隔热性。

正常运行后130℃的水输送到40公里以外时，降温仅为1℃左右。

有很强的防水和耐腐蚀能力，不需附设管沟，可直接埋入地下或水中，施工简便迅速，综合造价低。

在低温条件下也具有良好的耐腐蚀和耐冲击性，可直接埋入冻土层。

预制保温管使用了耐腐蚀性的(HDPE：高密度聚乙烯)外套管，不受生物和化学腐蚀的影响。

可根据用户需要提供DN20~DN1200之间各种管径及保温厚度的管材和相配套的管件(弯头、三通、变径pipe、固定节等)

产品执行城镇建设行业标准CJ/T 114-2000和CJ/T 115-2001标准。

为确保预制直埋保温pipe三位一体，发泡前钢pipe外表面抛丸处理，塑料pipe内表面电晕处理，其中除锈等级达到GB/T 8923-1998中Sa2.5的规定，外壳pipe内表面张力达到50达因/厘米。

聚氨酮直埋保温pipe补偿敷设方式：

聚氨酮直埋保暖pipe供heat pipe道方法有三种：无补偿方式、一次性补偿方式和有补偿安装方式，因城市生活小区供heat pipe网从经济安全方面考虑均采用温度≤120℃’s heat water，小区用PVC给water pipe厂家联系电话可快速获取相关信息。

1、无补偿直埋敷设方式

聚氨酮直埋保持暖piping no compensation direct burial installation method uses the friction force between the soil and the outer protective layer to fix the piping, which ensures that the piping does not stretch or shrink excessively during operation.

2、一次性补偰直 burial installation method

The one-time compensation straight burial installation method involves welding a length of piping onto a steel tube, then heating it to its maximum temperature and allowing it to cool before welding on another length of piping, creating a continuous run of insulated piping with built-in flexibility for thermal expansion and contraction.

检测项目：

The following tests are conducted on insulated pipes:

Density: The density of the insulation material must be within specified limits to ensure proper bonding with other materials.

Thermal conductivity: This parameter determines how well an insulation material retains heat.

Mechanical properties: These include tensile strength, elongation at breakage, and lateral compression ratio for assessing PE outer protective layer performance.

Heat stability: This is evaluated using oxygen induction time (OIT), which measures resistance to degradation under high temperatures.

Material analysis: Chemical composition analysis is performed on both steel tubes and insulation materials.

Pre-assembled connections:

Pre-assembled insulated pipes come equipped with pre-fabricated fittings such as elbows, tees, couplings, reducers, adapters etc., designed specifically for use in conjunction with these insulated pipes.

Site preparation:

Before laying down insulated pipes underground or underwater work-site preparation is essential including excavation trenches if necessary filling them back up after completing works by ensuring their compactness sealing any gaps or cracks around joints preventing moisture from seeping into these areas where possible due more damage over time further improving overall life expectancy while keeping costs low compared traditional methods when considering long-term savings against potential repairs needed future years ahead based solely maintenance costs alone ignoring initial investment price tags associated different types technologies being employed here today so now you know why they call this kind industry leading technology!