To produce different or additional aesthetic effect, to obtain more abstracting total effect and thereby to dissolve any possible monotonousness of a total structure by applying a motif only on at least a group of a limited part of the same side of a deformed section of a relief.
When the deformed section 11 is a part of a strip 13 between which a perforated link 12 is formed as a case of using an expanded metal, the motif 16 exists only on one flank of the strip 13, that is only on the flank 14. The flank 14 is on a downstream side in an extension direction when formed from a corresponding surface of an initial metallic sheet. Since the flank 14 is inclined with a base surface, view of the motif 16 perceived by a viewer changes according to a viewing angle, that is, according to viewer's viewing direction of a deformed metallic structure 10. Accordingly the view of the motif changes by viewer's motion to the structure.
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