Metal working – Method of mechanical manufacture – Assembling or joining
Patent
1998-04-20
1999-12-07
Han, Frances
Metal working
Method of mechanical manufacture
Assembling or joining
29460, 2642791, 264273, B21D 3500, B23P 1904
Patent
active
059962089
ABSTRACT:
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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Han Frances
N.V. Bekaert S.A.
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