The present invention relates to a PE polyethylene saddle knitting tube.;When connecting the conventional knitting tube, it was connected in a structure such as union joint to secure both ends firmly. However, since the packing interposed inside the connection part has a circular ring-shaped structure, there is a disadvantage in that the contact area is small and leakage occurs due to corrosion and physical property change, and leakage occurs due to changes in season, weather, and temperature. When the length is stretched, it cannot absorb the stretched length, resulting in the tube being bent or twisted, even the fragile parts being ruptured, causing leakage.;Therefore, the present invention, when connecting the two sides of the canal pipe connection to the saddle so that both ends of the protruding jaw of the bird is inserted into the escape prevention groove to connect the knitted pipe securely and at the same time the both ends of the bird according to the degree of expansion of the knitting pipe It is formed to slide in the escape prevention groove so as to absorb the length change during contraction and extension of the knitting pipe, thereby preventing deformation such as bending and twisting of the knitting pipe and resulting damage, and also the inner diameter of the packing in the saddle packing groove. When the knitting pipe is stretched, both ends of the packing, which is tightly adhered to the surface of the connecting pipe, can flow in the stretching direction while maintaining the airtightness according to the expansion and contraction of the knitting pipe. It had a good airtightness and robustness while accepting length change leisurely.
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