Clamp flexible expansion joint first in our country in the 1970 s of the coal industry in underground drainage, gradually expand to use the power plant ash pipe on use. At present, coal, electric power, architecture, chemical industry, fire control, sewage treatment, metallurgy, tap water, pharmacy, municipal, petroleum and other fields have been widely used. Transport medium including smoke, wind, cold, oil, chemical raw materials, acid and alkali medium, food, and water, such as fluid fluid application industry widely

A Clamp flexible expansion joints, execute the national GB8259, GB8260, GB8261 standards.

Second, Clamp flexible expansion joint composition: wild card race, sealing ring, inside card fittings, tighten bolts.

Three, Clamp flexible  expansion joint of the flexible features:

1. reasonable structure, and the structural high strength

The working state of the hoop card equivalent to pressured container, medium the axial force by card hoop bear completely, bolt only bear card hoop in the radial force. Because the width of the sealing ring is limited, radial force far smaller than the axial force. Flange connection, bolt but bear the all of the axial force and the gasket compaction force.

2. good self-styled role secret

By pipeline sealing function within the medium to the apron compaction force, pressure, the greater the sealing performance is better. To prevent leakage of medium without pressure, the inner diameter of the apron to less than the outer diameter of pipe interface, the apron the interface has preloaded force, can prevent medium in no pressure outside leakage. Compared with flange diameter, the greater the pressure, the higher the advantages, the more outstanding.

3. pipe connections in flexible state

Card with a gap between nt pipe, tube in card can have a small amount of hoop activities. Therefore, the two nearby tube is allowed to have a certain corner. After connection of two steel pipe, steel pipe between gaps, allow pipe axis and can adapt to move to the expansion of the pipeline, contraction; Between the pipe of aprons connection, can effectively reduce the more than 70% of the mechanical vibration.

4.Clamp flexible expansion joint  installation method

When the pipe needs flip, only to the joint of the several bolts removed can flip arbitrary Angle, do not need to cut on or welding, saving a lot auxiliary workload and costs, reduce labor intensity, shorten the construction period. Compared with flange connection and improve working efficiency 6-8 times, and maintaining the workload is very small.