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采暖供热管道在使用中有一定的热伸长量,因此,采暖管道在敷设安装过程中,遇到楼板或穿墙时,必须设置套管,以保证管道自由伸缩。国家建筑安装工程质量验评标准规定,地面设置套管时,套管高出地面不得少于20毫米,套管底部与天棚面齐平。这个标准对于一般的、或地面没有特殊要求的房间,都可以满足要求。但对于有严格要求的地面,如厕浴间,采暖管道需穿过防水地面,而套管的
Heating and heating pipes have a certain degree of thermal elongation in use. Therefore, during the laying and installation process of heating pipes, casings or through-walls must be installed to ensure free expansion and contraction of pipes. The national construction and installation engineering quality assessment standards stipulate that when the casing is installed on the ground, the casing shall not be less than 20 mm above the ground, and the bottom of the casing shall be flush with the surface of the ceiling. This standard meets the requirements for rooms that are either general or have no special requirements on the ground. However, for the strict requirements of the floor, toilets and baths, heating pipes need to pass through the waterproof surface, and the casing