The present invention relates to a device capable of holding a straight piping element to a strong support structure, taking up the radial forces applied to the piping and permitting slight axial movements due to expansion. The device permits piping to be attached to at least one anchoring base plate sealed to a strong structure and comprises a plurality of rectilinear coupling elements attached through articulations to the piping, joined to the anchoring base plate and arranged in a plurality of planes perpendicular to the axis of the piping each of which contains at least three of said coupling elements. It is essentially characterized by the fact that it comprises at least one annular collar whose bore forms at least one face parallel to the axis of the piping and applied against an outer bearing surface of the piping whose cross-section corresponds to that of said bore. This collar is connected, through said articulations, to said coupling elements in a plane perpendicular to the axis of the piping. Such a system is useful in a nuclear power station.
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