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'Lamina' refers to rolled steel.

Roll forming is a continuous bending operation in which a long strip of metal (typically coiled steel) ... For the factory, see steel mill. A rolling mill, ...
en.wikipedia.org/wiki/​Rolling_​(metalworking)
Roll forming - Wikipedia, the free encyclopedia

The shaped strips can be cut to length ahead of a roll forming mill ... For bend radii of 50 times the material thickness of a low carbon steel .07 in thick can ...
en.wikipedia.org/wiki/Roll_form

Roll forming
Roll forming, sometimes spelled rollforming, is a metal forming process in which sheet metal is progressively shaped through a series of bending operations. The process is performed on a roll forming line in which the sheet metal stock is fed through a series of roll stations. Each station has a roller, referred to as a roller die, positioned on both sides of the sheet. The shape and size of the roller die may be unique to that station, or several identical roller dies may be used in different positions. The roller dies may be above and below the sheet, along the sides, at an angle, etc. As the sheet is forced through the roller dies in each roll station, it plastically deforms and bends. Each roll station performs one stage in the complete bending of the sheet to form the desired part. The roller dies are lubricated to reduce friction between the die and the sheet, thus reducing the tool wear. Also, lubricant can allow for a higher production rate, which will also depend on the material thickness, number of roll stations, and radius of each bend. The roll forming line can also include other sheet metal fabrication operations before or after the roll forming, such as punching or shearing.

As for R.C., seeing as you're talking about an insurance claim, it could stand for Responsibilidad Civil (Civil Liability)