Cold‑formed carbon steel structural piping with longitudinal seams (welded) and a rectangular, squared, round or special shape, for use in construction (bolted, riveted and welded structures), and for general structural purposes

NCh3518:2017, Acero - Tubular estructural de acero al carbono conformado en frío soldado con una costura - Requisitos (Chilean Standard (NCh) No. 3518:2017: Steel - Cold-formed carbon steel structural piping with seams - Requirements) (20 pages, in Spanish)

The notified Standard establishes the requirements for cold-formed carbon steel structural piping with longitudinal seams (welded) and a rectangular, squared, round or special shape, for use in construction (bolted, riveted and welded structures), and for general structural purposes. It applies to pipes with a circumference of no more than 2235 mm, and a nominal wall thickness of more than 1.5 mm or less than 25.4 mm.