The working cylinder and the liquid storage cylinder of the double cylinder hydraulic shock absorber are all made of precision steel pipe, and the installation ring is made of seamless finish rolling pipe. It is one of the important parts of the shock absorber and the first choice to realize the lightweight of the shock absorber.
Cylinder: it provides reciprocating motion of piston rod in cylinder body. The key characteristics are internal surface, internal and external diameter tolerance, roughness, etc.
Reserve tube: store shock absorber oil. The key characteristics are mechanical properties including strength and elongation, and no cracking in subsequent processing deformation
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