Connecting piece of plastic tubing

The utility model discloses a connecting piece of plastic tubing, including double -phase plastics tube coupling to the cover tube -shape that sets up, one end that two plastics tube couplings were carried on the back mutually links firmly with the one end of a plastic tubing respectively, the one end that two plastics tube couplings are relative is equipped with a chuck respectively, be equipped with the sealing washer between two chucks, the one end terminal surface from interior to exterior edge that the sealing washer was kept away from to two chucks inclines to set up to the one end of being close to the sealing washer from the one end of keeping away from the sealing washer, a pipe strap clamps in the outside of two chucks and sealing washer, be equipped with annular slot in the inboard of pipe strap, two chucks and sealing washer clamp in annular ditch inslot, the terminal surface that both sides wall slope set up and the slope of two chucks sets up of annular slot is corresponding, and its cross secti