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A corrugated spiral pipe with a coupling device comprises a pipe body 10, a pair of flanges 20, and a pair of binding bands 30. The pipe body 10 has a cylindrical shape and is prepared to have a spirally corrugated shape 11. The pair of the flanges 20 are formed in one body of outer circumferences o

A corrugated spiral pipe with a coupling device comprises a pipe body 10, a pair of flanges 20, and a pair of binding bands 30. The pipe body 10 has a cylindrical shape and is prepared to have a spirally corrugated shape 11. The pair of the flanges 20 are formed in one body of outer circumferences of both end portions of said pipe body 10, each of the flanges 20 having a large outer diameter portion at an end portion of the flange 20 and a small outer diameter portion 21 at a longitudinally inside portion of the flange 20. Each of said binding bands 30 is installed on the small outer diameter portion 21 of the flange 20 and is composed of a metallic belt plate 31 which has a ring configuration in which some part thereof is cut, a plurality of connecting rings 32 which are installed axially on an outer surface of the metallic belt plate 31 at specific intervals, and bearing plates 33 which are formed vertically to both end portions of the cut part of the metallic belt plate 31, each of the bearing plates 33 having a hole.

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1. A corrugated spiral pipe with a coupling device comprising a pipe body 10 which has a cylindrical spirally corrugated shape 11; a pair of flanges 20 which are formed in one body on outer circumferences of both end portions of said pipe body 10, each of the flanges 20 having a large outer diameter

1. A corrugated spiral pipe with a coupling device comprising a pipe body 10 which has a cylindrical spirally corrugated shape 11; a pair of flanges 20 which are formed in one body on outer circumferences of both end portions of said pipe body 10, each of the flanges 20 having a large outer diameter portion at an end portion of the flange 20 and a small outer diameter portion 21 at a longitudinally inside portion of the flange 20; and a pair of binding bands 30, each of said binding bands 30 being installed on the small outer diameter portion 21 of the flange 20 and being composed of a metallic belt plate 31 which has a ring configuration in which some part thereof is cut, a plurality of connecting rings 32 which are installed axially on an outer surface of the metallic belt plate 31 at specific intervals, and bearing plates 33 which are formed vertically to both end portions of the cut part of the metallic belt plate 31, each of the bearing plates 33 having a hole. 2. The corrugated spiral pipe as defined in claim 1, wherein said pipe body 10 is prepared by winding spirally a corrugated steel plate A. 3. The corrugated spiral pipe as defined in claim 1 or 2, wherein said pipe body 10 is prepared by using a coated steel plate C in which a synthetic resin B is coated on the outer and inner surfaces of a thin steel plate A. 4. The corrugated spiral pipe as defined in claim 1, wherein further includes a reinforcing plate 34 on both sides of bearing plate 33 of said binding band 30. 5. A coupling structure of two corrugated spiral pipes, each of said two corrugated spiral pipes 1 comprising a pipe body 10 which has a cylindrical spirally corrugated shape 11, a pair of flanges 20 which are formed in one body on outer circumferences of both end portions of said pipe body 10, each of the flanges 20 having a large outer diameter portion at an end portion of the flange 20 and a small outer diameter portion 21 at a longitudinally inside portion of the flange 20, and a pair of binding bands 30, each of said binding bands 30 being installed on the small outer diameter portion 21 of the flange 20 and being composed of a metallic belt plate 31 which has a ring configuration in which some part thereof is cut, a plurality of connecting rings 32 which are installed axially on an outer surface of the metallic belt plate 31 at specific intervals, and bearing plates 33 which are formed vertically to both end portions of the cut part of the metallic belt plate 31, each of the bearing plates 33 having a hole, wherein the adjacent flanges 20 of said two corrugated spiral pipes 1 are faced each other, and the connecting flanges 32 of said adjacent binding bands 30 of said two corrugated spiral pipes 1 are aligned, and bolts are inserted through the connecting rings 32 and nuts are used to tighten up.