product advantages：
1. 瓦-泡复合保温是硬质保温结构，无需管道支架；1. The tile-bubble composite insulation is a hard insulation structure, without the need for pipe brackets;
2. The tile-foam composite insulation has no insulation ring seam;
3. The material of the thermal insulation layer of the tile-foam composite structure is not easy to be deformed or deteriorated, and the thermal insulation pipe can ensure that there is no obvious change within 30 years;
4. The inner surface of the tile-foam composite thermal insulation jacket steel pipe is completely covered by foam, and there is no possibility of corrosion;
5. The tile-bubble composite thermal insulation pipe can be equipped with a thermal insulation end seal that does not need to be removed;
6. In the event of flooding, water soaking, water leakage and other disasters during construction and installation or operation, due to the characteristics of the material itself, the affected area is small, and the heat preservation will not be affected after drainage treatment.

Application field：
预制直埋式保温管广泛用于液体和气体输送管网、化工管道保温工程、石油、化工、集中供热热网、中央空调通风管道，市政工程等，具有明显的社会和经济效益，也是供热节能的有效措施。Prefabricated direct-buried thermal insulation pipes are widely used in liquid and gas transmission pipeline networks, chemical pipeline thermal insulation projects, petroleum, chemical industry, central heating and heating networks, central air-conditioning ventilation pipelines, municipal engineering, etc. It has obvious social and economic benefits. Effective measures for thermal energy saving.