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Corrugated galvanised iron (CGI) or steel, colloquially corrugated iron (near universal), wriggly tin (taken from UK military slang), pailing (in Caribbean English), corrugated sheet metal (in North America), zinc (in Cyprus and Nigeria) or custom orb / corro sheet (Australia), is a building material composed of sheets of hot-dip galvanised ...
After Palmer's patent expired in 1843, corrugated galvanized iron (CGI) became a world-wide favorite roofing material. [7] In the later 19th century, steel mills replaced iron works, and the product using steel could be made thinner for the same span and stiffness performance, but the term CGI remains in the UK and Australia.
Exposed Fastener panels are held down by fasteners through the outside of the metal, whereas Hidden Fastener Panels are held by hidden fasteners, clips, and sometimes adhesives. Typical metals include Galvanized Steel, Galvalume, Aluminum, Copper, or Vinyl 9Which while not metal is included in many cases for its matching profiles).
Rusted corrugated steel roof. Galvanized steel can last for many decades if other supplementary measures are maintained, such as paint coatings and additional sacrificial anodes. Corrosion in non-salty environments is caused mainly by levels of sulfur dioxide in the air. [10]
Corrugated galvanised iron, a building material composed of sheets of cold-rolled hot-dip galvanised mild steel; Corrugated plastic, a wide range of extruded twinwall plastic-sheet products produced from high-impact polypropylene resin; Corrugated stainless steel tubing, tubing made of stainless steel with corrugation on the inside or outside
Martins Ferry Works at Martins Ferry, Ohio, which produced galvanized sheets, galvanized roofing and accessories, corrugated culverts, and hand-dipped items. It featured two continuous galvanizing lines where coils of steel strips were processed, galvanized, and treated and sold under the SofTite brand.