Rigid waterproof casing is the outer wing ring of steel pipe, installed in the concrete wall, used for general pipeline through the wall, conducive to wall waterproofing; flexible waterproof casing is located on the outside of the wing ring, also has a tooth ring and other flange inner wire, there are sets of sales, but also can be processed by themselves, used for shock absorption pipeline, such as pipeline through the wall and pump connection. In other words, if you consider the waterproof performance of both sides of the wall, then choose flexible waterproof casing; if you only consider the degree of pipeline penetration, without considering the waterproof performance and pipeline displacement deformation, you can choose rigid waterproof casing.
Rigid waterproof casing is suitable for buildings that do not bear pipeline vibration and expansion deformation, and for building construction or pipeline renewal before space is limited or pipeline installation. For areas with seismic requirements, rigid waterproofing casing, if used, should provide a flexible connection on the pipe entering the pool wall or building exterior wall. type A is suitable for steel pipes, type B and C for ductile iron and cast iron pipes.
Both rigid waterproof casing and flexible waterproof casing are designed and made according to the atlas standard. They are divided into set standard and non-standard. Atlas standard waterproof casing refers to the 02S404 or 02S312 standard atlas made in full accordance with the relevant requirements of the Ministry of Construction. Flange thickness, wing ring thickness, pipe diameter and thickness have strict requirements. Non-standard refers to the relaxed requirements for flange thickness, wing ring thickness, pipe diameter and thickness. Strictly speaking, these products are inferior. Of course, to a certain extent, the relaxation of standards will not affect the use, but excessive relaxation of standards will affect the use of performance.
