Steel conduit node for dewatering well penetrating base plate

The utility model discloses a steel conduit node for a dewatering well penetrating base plate. The lower end of a steel conduit sleeves the upper end of a well tube, and the lower end of the steel conduit is fixedly embedded into a circular pad layer which is positioned below a cushion layer of a base plate; an upward flanging is arranged in a position, through which the steel conduit penetrates, of a waterproof protective layer of the base plate, and the flanging is arranged on the outer wall of the steel conduit in a hot-set manner; an outer seal ring is arranged on the outer wall, which corresponds to the middle position of the base plate, of the steel conduit, an inner seal ring is arranged on the inner wall of the steel conduit, and two seal strips which expand in water are respectively arranged on the outer seal ring and the inner seal ring. According to the steel conduit node, the self waterproof requirement of the steel conduit can be satisfied, and the requirement of a sealed waterproof structure that the waterproof layer of the base plate cannot be broken by underground water below the foundation base plate after a well is sealed can be satisfied.