Stainless steel seamless steel pipe expanding equipment

The utility model discloses a stainless steel seamless steel pipe expanding device which comprises an expanding mechanism, a fixing mechanism and a supporting mechanism, the supporting mechanism is composed of a seat body and a plurality of pairs of telescopic supporting pieces arranged on the two sides of the seat body at equal intervals, and the middle of each telescopic supporting piece is provided with an arc-shaped groove corresponding to a steel pipe to be machined. The steel pipe is clamped between each pair of telescopic supporting pieces in a suspended mode, and when the diameter of the steel pipe is expanded, due to the fact that the steel pipe is clamped between the arc-shaped grooves of each pair of telescopic supporting pieces in a suspended mode, after the diameter of the steel pipe is expanded, the axis of the steel pipe can still be kept coaxial with the fixing position of the fixing mechanism. The problem that the coaxiality of the steel pipe and the fixing position of the fixing mechanism de