Introduction of flexible pipe materials

Update:09-05-2019
Summary:

Flexible steel pipe means the ability of the pipe to ab […]

Flexible steel pipe means the ability of the pipe to absorb thermal expansion, cold shrinkage and other displacement deformation through its own deformation. Flexible pipes have many different classifications depending on the material, but their commonality is highly resistant to corrosion. The FRP sand pipe and the rubber material corrugated pipe are non-metallic materials and have strong corrosion resistance; the metal coil corrugated pipe galvanized layer also has good corrosion resistance.

The pipe is flexible. The glass fiber reinforced plastic sand pipe is formed by winding glass fiber, and the gravel is clamped in the middle for increasing the rigidity; the rubber or plastic material corrugated pipe is hot-casted, and some varieties are provided with a metal steel wire skeleton in the middle, and the metal bellows is formed by a sheet metal crimping. These pipes have good axial stiffness and their stiffness values increase with the wall thickness of the pipe.

Compared with reinforced concrete pipe, the large axial flexible deformation will not damage the pipe itself, the maximum axial allowable deformation is of the pipe length, and the maximum radial allowable deformation is 5%. The value provided by the manufacturer can adapt well to the soft foundation. . It can also be called a flexible pipe. Easy to transport and install. Pipe production length is 6~8 meters, even longer, and the interface is small, so the installation period is short. The construction time of the interface is short.

Mechanical, physical, chemical sealing is used instead of concrete sling sealing, and some do not even use concrete foundation, eliminating the time waiting for concrete to maintain. Pipe flexibility is a concept that reflects the difficulty of pipe deformation. It indicates the ability of the pipe to absorb thermal expansion, cold shrinkage and other displacement deformation through its own deformation.

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