The pipeline paved by the invention, even if the local part is damaged, water can be effectively prevented to seep into the insulating course in order to ensure the heat insulation effect.
利用本发明铺设的管道即使局部破损时，仍可以有效防止渗水到保温层，确保管道的保温效 果。
The pipeline paved by the invention, even if the local part is damaged, water can be effectively prevented to seep into the insulating course in order to ensure the heat insulation effect.
利用本发明铺设的管道即使局部破损时，仍可以有效防止渗水到保温层，确保管道的保温效 果。
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