COMPOUND TUBE
The composite pipe 10 has a tubular pipe body 12 and a tubular coating layer 20. The coating layer 20 has a concertinaed shape by forming an annular ridge portion 22, which covers the outer circumference of the pipe body 12 and is convex outward in the radial direction, and an annular valley portion...
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Format: | Patent |
Sprache: | eng ; fre ; ger |
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Zusammenfassung: | The composite pipe 10 has a tubular pipe body 12 and a tubular coating layer 20. The coating layer 20 has a concertinaed shape by forming an annular ridge portion 22, which covers the outer circumference of the pipe body 12 and is convex outward in the radial direction, and an annular valley portion 24, which has a length in the axial direction S shorter than the ridge portion 22 and has a concave outer side in the radial direction, alternately in the axial direction S of the pipe body 12. The coating layer 20 can be shortened in the axial direction S while being guided by the outer circumference of the pipe body 12. |
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