| 摘要 |
System which consists in the use of a corrugating assembly composed of individual rollers 2 and 3 provided with reciprocal shapes for defining the corrugation, there being, adjacent and downstream, a further roller 4 with the same configuration as one of the previous ones, the downstream roller facing the exit of the corrugated metal sheet 5 in order to force the latter to deflect, defining a continuous longitudinal curvature. <IMAGE>
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