Pipeline joint combination with flange

The invention discloses a pipeline joint combination with a flange. The pipeline joint combination comprises a joint main body, a pipe body and the flange. A joint is fixedly arranged on the joint main body. The pipe body is inserted into the joint. A sealing ring is arranged between the end of the pipe body and the joint and locked through the flange. An arch expansion protrusion is arranged at the end of the pipe body. An embedded end is arranged on one side, far away from the pipe body, of the expansion protrusion. The flange is a locking precision casting flange. Compared with the prior art, the pipeline joint combination has the beneficial effects that the pipeline joint combination is simple in structure and convenient to use; the expansion protrusion of the pipe body is matched withthe sealing ring, and the sealing effect is enhanced; the stability can be provided through a cone when water pressure is relatively high and vibration is generated during use, flow stability is guaranteed, and the component