water string meaning in Chinese

防水套管
隔水套管柱

1 , flexible water string is generally applied to the structure with requirement of vibration or water proof in the position , through which tube goes
1柔性防水套管一般适用于管道穿过墙壁之处受有振动或有严密防水要求的构筑物。
2 , flexible water string is generally applied to the structure with general requirement in the position , through which tube goes . 3 , the wall that tube goes through shall be concrete , the total range of poured concrete shall be 200mm more than diameter of external ring
3柔性及刚性防水套管穿墙处之墙壁,如遇非混凝土墙壁时应改用混凝土墙壁,而且必须将套管一次浇固于墙内。