Application of large-diameter elbow

     The large-diameter elbow is a telescopic structure (building) that will not be affected by the pipe when the pipe passes through the wall. For areas with earthquake disaster fortification rules, such as large-diameter elbows, flexible connections should be set on the nearest guidelines on the pipes entering the side walls or building walls. Seamless steel pipes, ductile iron pipes and cast pipes can be used.

1. flexible large-diameter elbows are divided into three types: flexible large-diameter elbow type, large-diameter elbow and rigid wing ring according to the structure.

2. flexible large-diameter elbows can be used in areas with earthquake disaster fortification rules, and the pipe crossing the wall is subject to vibration and pipe telescopic deformation, or structures (buildings) with strict moisture-proof rules. Type B is generally used for reservoirs or through internal and external walls, and Type A is used to penetrate the walls of structures (buildings).

3. the flexible waterproof wing ring can use pipes to pass through the wall and will not be subject to pipeline vibration and telescopic structures (buildings). The indoor space where the pipes can pass through the wall is relatively limited or the pipeline construction lies in the structure (building) or pipeline. The transformation. For areas with earthquake disaster fortification rules, if flexible waterproof wing rings are selected, flexible connections should be set on the nearby pipes that enter the side walls or building walls.

4. when selecting or manufacturing flexible large-diameter elbow specifications, consideration should be given to the working conditions and installation rules of the pipeline design. The structural engineer is determined.

5. the installation position of the domestic standard S404 flexible large-diameter elbow should be as far as possible around the deformation joint, the deformation joint or two structures (buildings) close to each other. When jointly necessary, it must be adopted by the structural engineer.

6. when the data and diameter of the pipeline are beyond the scope of this specification atlas, attention should be paid to the adjustment and adjustment of the domestic standard S404 flexible large-diameter elbow structure, specifications, and filling materials selected in the gap.

7. flexible large-diameter elbows are divided into three types: flexible large-diameter elbow type, large-diameter elbow and rigid wing ring according to the structure.