Name: SSQ-2-type casing expansion joints
Features:     
    tube-type expansion joints, also known as expansion joints, expansion joints, compensators. Expansion joints within a certain range of axial stretching, can be overcome within a certain angle docking pipeline resulting in different axial offset, can greatly facilitate the installation and removal of the valve pipe, the pipe allows the amount of stretching can be free expansion, once the maximum amount of stretching beyond its limit to play a role in ensuring the safe operation of pipelines. Details:   1. casing expansion joints of the product for a variety of water supply and drainage, water towers, pumps, water meters, valve installation replace them provides a great convenience to the long line stretching due to temperature played a very good regulatory role. 2-pipe expansion joints within the product pipe into cast iron (HT), zinc (DX) and steel (SF) of three. Working pressure points PN6, PN10, PN16 three. 3-pipe expansion joints installed, shall release the pressure plate bolts, install the product to the length of pull, and then tighten the diagonal method, not partial pressure such as overhead use, both ends have to install the appropriate mounting bracket. 4 flange connection using GB4216.3 - 4126.5 standard. 5, such as use other specifications can be produced. Connection: flange, welding two, Buried expansion joints (non-trench, located well installation) commonly used welding. Installation Notes: 1, sleeve-type expansion joints should be preceded by checking the installation of its type, size and configuration of pipes, must meet the design requirements. 2, with the expansion joints should be noted that the inner sleeve within the sleeve so that the direction of the child consistent with the flow direction, hinge-type expansion joints of the hinge rotation plane should be consistent with the displacement of rotating plane. 3, the need for "cold tight" expansion joints, pre-deformation of the auxiliary components used in the pipeline should be removed after installation. 4, non-deformation method with expansion joints to adjust the pipe installation tolerance, so as not to affect the normal function of expansion joints, reducing the service life and increase the piping, equipment, load bearing components. 5, the installation process, welding slag splashing is not allowed to wave the shell surface, the shell does not allow wave by other mechanical damage. 6, piping installed, remove as soon as possible on a wave of expansion joints for installation and transportation components and positioning of the yellow auxiliary fasteners, according to the design requirements will limit device transferred to the specified location, the piping system under full environmental conditions ability to compensate. 7, sleeve-type expansion joints may not be all the moving parts or external elements stuck to limit its scope of activities, should ensure the normal operation of the active site. 8, pressure test, pipe expansion joints should end with the second fixed tube frame reinforcement, so that pipe do not move or turn. The expansion joints on the media for gas piping and connections, pay attention to whether the need for additional water-filled temporary support. Hydrostatic test water cleaning fluid 96 chloride ion content of no more than 25PPM.
     SSQ-2-type double-pipe design and installation of expansion joints Data Sheet