Hollow tack hole corrugated pipe and manufacture method

Abstract

The invention relates to a hollow tack hole corrugated pipe which can effectively improve the strength of a heavy-caliber corrugated pipe, reduce the weight of the heavy-caliber corrugated pipe, and can save materials of the heave-caliber corrugated pipe, and a manufacture method. A plurality of inner flared holes are distributed on the wall of a hollow tube core; plastic layers are compounded on inner and outer walls of the hollow tube core and are helically overlapped to form a corrugated pipe; walls of spiral pipes forming the corrugated pipe are in molten and hermetic connection. The corrugated pipe has the advantages that first, a precedent of single-walled hollow tack hole corrugated pipe is created; second, the strength of the heavy-caliber corrugated pipe is improved, the weight of the heavy-caliber corrugated pipe is reduced, and consumption to materials of the heavy-caliber corrugated pipe is reduced; and third, a plurality of flared holes are formed on the wall of the metal tube core or non-metal tube core, and when the plastic layers of the metal tube core or non-metal tube core are molten for compounding, the molten plastic layers are injected into the plurality of flared holes on the wall of the metal tube core or the nonmetal tube core to form plastic rivet caps; and the rivet caps lead the plastic layers on the wall of the metal tube core or the nonmetal tube core to be firmly connected into a whole with the wall of the metal tube core or the nonmetal tube core, so that the corrugated pipe is prevented from being layered in use.

Description

technical field [0001] The invention relates to a hollow nail-hole corrugated pipe which can effectively improve the strength of the large-diameter corrugated pipe, reduce the weight of the large-diameter corrugated pipe, and reduce the material of the large-diameter corrugated pipe and its production method, which belongs to the manufacture of corrugated pipes field. Background technique [0002] CN201731192U, name "large-diameter double-wall corrugated water pipe", its pipe wall is composed of two layers inside and outside, its inner pipe wall is smooth, the outer pipe wall is trapezoidal corrugated, steel hoops are arranged in the cavity between the inner and outer walls, and The trapezoidal bottom groove on the outer wall is connected with the inner wall as a whole. The cavity between the inner and outer walls of the large-diameter double-wall corrugated water pipe is provided with a steel hoop, which improves the strength of the water pipe. The utility model has the c...

AI Technical Summary

Problems solved by technology

Its disadvantages: Since the wall of the corrugated pipe is composed of the inner wall and the outer wall, the compressive strength of the inner wall is enhanced by the outer wall, which not only has a large weight, consumes a lot of raw materials, but also has uneven compressive strength.

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