To stably and firmly fix a piping material to a fixing object surface, by pressing and supporting the whole outer peripheral surface of the piping material, by securing the thermal insulation effect by a covering pipe, by storing an excess length part in the peripheral direction of the covering pipe generated by a clearance formed between a fluid pipe and the covering pipe, with an excellent outward appearance, in a predetermined place of an inner peripheral surface facing an outer peripheral surface of the piping material, when fixing the piping material to the fixing object surface such as a floor surface and a wall surface.

A fixture is composed of a base body 11 for internally holding the piping material 61 for covering the flexible fluid pipe 62 with the covering pipe 63, and a cover body 31 installed on the base body 11 for blocking up an upper opening. The inner peripheral surface 2 facing the outer peripheral surface of the piping material 61 is formed for sandwiching the whole outer peripheral area of the piping material 61 in a state of installing the cover body 31 on the base body 11, and a recessed strip 17 is also arranged on the inner peripheral surface 2 for storing the excess length part in the peripheral direction of the covering pipe 63.