Oh no. Sorry. But you’ve made a mistake. The 25.4 is the outside diameter of the tubing. 1" steel pipe (from a metal supply store) will fit. 1" conduit is meant to fit 1" of cables inside of it. It has an outside diameter more like 29mm. Those parts will not work with any size of the cheaper conduit. You either need to make 23.5mm parts to fit 3/4" (ID) conduit or buy 1" (OD) tubing.
Tubing = measured by OD
Conduit/pipe = measured by what it can hold, or ID