Connector structure for pressure pipe

A connector structure for a pressure pipe, comprising a female connector and a male connector, the female connector comprising a piston and a positioning sleeve, the female connector having inner threads, the positioning sleeve having outer threads, a nut fitted on the positioning sleeve, the outer threads of the positioning sleeve being mated with the inner threads of the female connector, the piston having an insertion section to be inserted in the positioning sleeve, the insertion section having a slot on a face of the insertion section toward the male connector and transverse to a longitudinal direction of the connector structure and being provided with a first seal ring, the piston also having a rear section with a slot which is perpendicular to the slot of the insertion section and also perpendicular to the longitudinal direction of the connector structure, the male connector having threads on an outer wall thereof for engagement of the nut of the female connector, the male connector having a coupling section and a second seal ring, wherein, when the male connector is inserted and coupled to the female connector, the coupling section of the male connector is adapted to move the piston of the female connector backward to become an open state.