Cold-formed coated steel sheets

NCh223:2020 Construcción - Planchas de acero recubiertas conformadas en frío - Requisitos (Chilean Standard (NCh) No. 223:2020: Construction - Cold-formed coated steel sheets - Requirements) (34 pages, in Spanish)

1.1. The notified Standard establishes the requirements, dimensions, recommended test methods and sampling systems for cold-formed steel sheets that are covered with a 55% aluminium-zinc coating or other anti-corrosive metallic coatings obtained through a hot-dip process.

1.2. The Standard applies to cold-formed sheets with the following geometries: corrugated 18, corrugated 14, panel 5 bands, panel 4 trapezoids, and panel 6 trapezoids.

1.3 The Standard may be applied to cold-formed steel sheets of other geometries that are covered with a 55% aluminium-zinc coating or other anti-corrosive metallic coatings obtained through a hot-dip process.

1.4. The Standard does not apply to sheets for architectural use. The requirements governing steel are to be defined by Chilean Standard (NCh) No. 3357, and the fastening elements must be checked to ensure they meet the load conditions controlling the design.