The invention provides two-way synchronous clamping plasma steel pipe cutting equipment, belongs to the technical field of steel pipe cutting devices, and aims to solve the technical problem of steel pipes incapable of rotating and transferring through a mechanical device when the steel pipes are cut by a plasma cutter. The equipment comprises a rotary clamping device, a clamping sizing transfer device, a bracket device and a turnover discharge device; the rotary clamping device includes a clamping mounting frame, a turntable mechanism, a clamping mechanism, a two-way synchronous clamping drive connecting mechanism, a turntable driving mechanism and a lifting mechanism; and the clamping sizing transfer device includes a sizing transfer guide rail, a sizing clamping mounting frame, the clamping mechanism, the two-way synchronous clamping drive connecting mechanism, the lifting mechanism and a clamping moving disc mechanism. The equipment can realize clamping and rotation of the steel pipes in the steel pipe cutting process, and performs fixed-distance transfer for the steel pipes.