Detachable flange connects and pipeline interfacing apparatus

The utility model provides a detachable flange connects, including flange body and retaining ring, including pipe hole and screw on the flange body, flange body lower extreme is equipped with annular ladder groove and annular slot. The utility model also provides a pipeline interfacing apparatus, connect and the pipe end including the flange, the pipe end is including direct pipeline section and bulge loop, the bulge loop with direct pipeline section end meets, the bulge loop external diameter is greater than direct pipeline section, the bulge loop with direct pipeline section is coaxial, the bulge loop with mesh mutually in the ladder groove, the retaining ring is located the ditch inslot, the ladder groove with the retaining ring blocks from upper portion, lower part respectively the bulge loop. Implement the beneficial effects of the utility model are that: the flange connects each part can follow the pipe end dismantlement, the flange joint embolias above the pipe end, when the pipeline need pass through