1. Nominal caliber size and length of expansion section Generally expressed in DN, that is, nominal diameter. This is the same diameter as the device Tangkou that takes over or is connected to it.
Length refers to the distance from the surface to the surface of the expansion joint without external force.
2, Expansion section type Generally indicate the number and form of waves, such as whether it is single-wave or double wave, is the pump inside the suction sphere or elbow type sphere. Under the arch structure of the same height, the absorption displacement of the expansion joint of the double wave ratio is larger than that of the single-wave, but the large single arch structure design has a greater ability than the absorption displacement of many double-arch design structures, and this design section has a high curvature, a long curve and a large multidirectional displacement function.
This mainly combines the pipeline layout space situation and the heat displacement size to consider the choice synthetically.
3, corrugated pipe design pressure level.
