Installation requirements for rigid waterproofing sleeves
Installing rigid waterproofing sleeves in pipes can prevent leakage from the gap between the sleeves and water pipes. At the same time, the importance of installing rigid waterproof casing is to maintain the pipeline. When a building collapses, the gap between the pipe and the casing can compensate for the difference between the settlement of the pipe and the building and reduce the pressure of the building on the pipe. When pipes pass through basements and other buildings and structures with waterproofing requirements, special casing is usually applied as rigid Qingdao waterproof casing. Rigid waterproof casing is a steel pipe with an external flange ring (a ring made of steel pipe over a pipe in a steel pipe), installed in a wall (mostly concrete walls) for general piping through the wall, which facilitates the waterproofing of the wall. Rigid waterproof sleeve is widely used and has strong applicability. It can be used for pipeline projects such as water pipelines, chemical plants, sewage treatment plants, natural gas pipelines, oil pipelines, heating pipelines, etc.
Rigid waterproof sleeve installation requirements: When the rigid waterproof sleeve penetrates the wall, if it is wrong concrete wall, it should be replaced by concrete wall. The casting scale should be 200 larger than the diameter of the flange ring (D4), and the sleeve must be fixed to the wall at one time. The package should be compact. The thickness of the concrete wall of the rigid waterproof sleeve for the pipe should not be less than 200, otherwise it should be thickened on one side or both ends. The diameter of the thickened part is at least D4 + 200 rigid Qingdao waterproof casing welding structure scale public service and shape public service shall comply with JB / t5000.3-1998. Manual arc welding, electrode type E4303, grade J422. The fundamental shape and scale of the bevel shall comply with the rules of GB 985-88. When the rigid waterproof casing (part 1) made of coils, the permissible circumferential error is D3 ≤ 600, ± 2, D3> 600, ± 0.0035 D3.
