| 摘要 |
A method of improving the adhesion of a coating such as concrete to a metal strip which is helically wound around a pipe including a metal strip having the longitudinal and transverse wires, choosing distances between neighboring longitudinal wires that are evenly distributed over the length of the pipe including overlapping zones, overlapping the longitudinal wires having greater deformations which are offset from the longitudinal wires with smaller deformations in a direction along the central axis of the pipe and are offset in a direction away from the central axis of the pipe and all the deformations are disposed in the same plane.
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