Three-way pipe with HDPE (high-density polyethylene) pipe lining

The utility model discloses a three-way pipe with an HDPE (high-density polyethylene) pipe lining, which relates to the technical field of pipeline linings and comprises a three-way pipe straight pipe section and a three-way pipe vertical pipe section, a straight section lining is inserted into the three-way pipe straight pipe section, and a vertical section lining is inserted into the three-way pipe vertical pipe section; an opening is formed in the position, corresponding to the vertical section lining, of the straight section lining, and the position, corresponding to the opening, of one end, close to the straight section lining, of the vertical section lining is welded to the straight section lining in a sealed mode; the method has the beneficial effects that the lining HDPE pipe is used for repairing the pipeline lining, so that the effects of leaking stoppage, corrosion prevention, resistance reduction and pressure increase are achieved; the inner wall of the HDPE pipe is smooth, so that the on-way resi