Holding device for pipe joint and pipe joint using same

A pipe-joint holding unit for use in a pipe joint for a corrugated pipe, the unit comprising:

• a first holder having a ring segment;
• and
• a third holder, wherein
• the ring segment comprises a synthetic resin resistant to deformation by external tensile force, the ring segment being received on the inner surface of a protrusion of the corrugated pipe,
• the third holder comprising a ring received in a depression adjacent to the protrusion receiving the first holder, and
• the first holder and the third holder hold the corrugated pipe on the inner surface and the outer surface of the corrugated pipe.

A pipe-joint holding unit for use in a pipe joint for a corrugated pipe, the unit comprising:

• a first holder having a cylindrical base and a ridge;
• and
• a third holder, wherein
• the ridge comprises a synthetic resin resistant to deformation by external tensile force, the ridge protruding from the outer surface of the cylindrical base, the ridge being received on the inner surface of a protrusion of the corrugated pipe,
• the third holder comprising a ring received in a depression adjacent to the protrusion receiving the first holder, and
• the first holder and the third holder hold the corrugated pipe on the inner surface and the outer surface of the corrugated pipe.