This prefabricated chute pipe with sealedly assemblage is suitable to deliver granular or powder materials.
本发明涉及一种适用于输送颗粒、粉状物料的密封装配式预制溜管。
2
The characteristics of polyurethane foam used as insulating layer of prefabricated directly buried insulating pipe are introduced.
介绍了作为预制直埋保温管保温层的聚氨酯泡沫塑料的特性。
3
Therefore the building prefabricated circular pipe pile of the utility model can be used for not only underground foundation but also above-ground building column.