Product part names

Construction of flanged bellows and names of parts used for them are shown.

Product part names

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Name	Description
Flange	Disk/cylinder-shape part used for connection of pipes, etc., as a type of piping joint.
Welding groove	Grooves are provided in flanges for butt-welding of bellows and flanges; Such grooves that prevent interference between corrugations and fittings when bellows are compressed are also provided.
Intermediate ring	Flange used to prevent meandering and buckling and to obtain smooth motion for long bellows.
Internal guide	Guide (shaft) passing through the bellows for transfer of customer samples, etc., and also used to prevent buckling for long bellows.
External guide	Externally passing guide (shaft) used to prevent buckling for long bellows.
Multiblock structure	Structure used to avoid meandering and buckling in one block for long bellows; split into two blocks or more in order to shorten the length of one block.
Number of blocks	Number of bellows in the case of a multiblock structure.
Configuration for preventing excessive expansion/contraction	Configuration to equalize the operating ranges of respective blocks of a multiblock structure; mainly consisting of contraction prevention stoppers and expansion prevention rods.
Contraction prevention stopper	Stopper to equalize, on the compression side, the operating ranges of respective blocks of a multiblock structure; softening the effects of the bellows’ own weight in a vertical posture.
Expansion prevention rod	Rod to equalize, on the tension side, the operating ranges of respective blocks of a multiblock structure; softening the effects of the bellows’ own weight in a vertical posture