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Precautions for installation of prestressed bellows

Label: prestressed bellows release time: November 19, 2020 click 20 second

? ? Prestressed metal bellows It is also called metal corrugated pipe culvert or steel corrugated culvert pipe. It is a circular corrugated pipe made of corrugated metal plate or assembled with semicircular corrugated steel sheet.


Metal corrugated pipe is widely used in highway, railway, small bridge, passage, retaining wall and culvert (pipe) in retaining wall support of various mines and roadways.


Compared with reinforced concrete pipe culvert, metal corrugated pipe has the advantages of thin pipe section, light weight, convenient transportation and storage, simple construction technology, rapid assembly and short construction period.

 Prestressed bellows

The corrugated pipe can also be removed into any area where the required bearing capacity of the corrugated pipe is lower than that of the corrugated pipe when necessary.


Metal corrugated pipe has been widely used in highway, railway and housing construction projects abroad. Some developed countries not only have factories to manufacture bellows joints, but also some countries have issued codes or regulations for design and construction of corrugated pipe culverts.


Before liberation, China's highway and railway departments also used imported bellows. At present, there are factories specializing in the production of corrugated pipe culverts in China. In view of the many advantages of this kind of pipe culverts, China's steel production has been ranked in the forefront of the world, and the prospect of popularization and application of corrugated pipe culverts in China is very broad.


Precautions for using metal bellows:


The use of metal corrugated pipe can ensure good quality of prestressed pipe, and is conducive to threading and ensuring the position of steel bundle.


1. Due to the long length and large volume of the rolled metal bellows, the engineering unit generally proposes the specifications and quantity to the factory, and the factory takes the equipment and materials to the construction site for processing. This can greatly reduce the loss of bellows (short head, bumping, corrosion, etc.), and can meet the requirements of the demander, and save money.


2. After the metal bellows are rolled on site, they should be stored in the dry area with a span of 1. The 6 m wooden board is overhead in many sections, covered with tarpaulin and other coverings, and the stacking height should not exceed 7 M.


3. Handle with care during handling and do not mix with other materials and equipment. If the construction cost is large, wooden frame can be used for transportation, rather than steel wire rope for binding and lifting directly.


4. After the metal bellows are installed, other materials and sundries shall not be stacked on the pipe, so as to avoid the deformation of the pipe.


5. The pipeline shall be in place, and the joint length specified at both ends of the pipeline shall be marked with obvious marks to facilitate the connection of connecting pipes.


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