The utility model relates to pipeline technical field, especially a kind of high-efficiency heat insulation type composite heat preservation
pipe, including heat preservation
pipe, the one end of heat preservation
pipe is provided with integrally formed first connector, the other end of heat preservation pipe is provided with integrally formed second connector;First connector includes outer shell and inner shell, outer shell and inner shell are cylindrical structure, outer shell and inner shell are coaxially arranged, there is gap between outer shell and inner shell,
sponge block is filled in the gap between outer shell and inner shell, the other end of outer shell is provided with
screw thread, the one end of outer shell provided with
screw thread is screwed with circular ring, circular ring is used to block the end of outer shell and inner shell not connected with the one end of heat preservation pipe, the one end of the connecting portion of heat preservation pipe is set as the structure of first connector, when the liquid in the interior flows through the connecting portion, heat is not excessively transferred outward,
sponge block has good heat insulation capacity, and the heat insulation of connecting portion is realized.