而柔性防水套管大多使用在有振动性的管道中或者是在管道转弯出加装使用,所以构造比刚性要复杂一些,柔性防水套管主要有套管本体,压栏和橡胶密封圈组成,对于管道穿墙处的位移柔性防水套管能很好的柔性防水套管能补偿,在管道振动冲击墙体时候柔性防水套管起到一定的缓冲作用,防止墙体脱落掉料,柔性防水套管对于外墙管道进入内墙也具有很好的效果。Flexible bushing: that is to use sealing material between casing and pipe to seal effect. Steel sleeve: it is sealed with steel material between casing and pipe to reach sealing effect. What is the use of waterproof casing and the casing of the environment is to prevent liquid leakage or leakage into the place, such as ponds, septic tanks, basement, is in the outer wall of the bushing is not less than 1 times increase waterproof wing, this wall is poured in the casing as a whole, not because of swelling shrinkage factor and cracks and leakage. Because of environmental requirements, rigid waterproof sleeve is generally used in the basement and other pipelines, the location of the pipeline, flexible waterproof tube is mainly used in the civil air defense wall, Chongqing rigid waterproof tube, water tank and other places demanding