NBR 6591

Escopo

Esta Norma fixa as características e medidas dos tubos de aço-carbono, soldados por resistência elétrica ERW (Electric Resistance Welded), de seção circular, quadrada, retangular e especial, obtidos a partir de bobinas e chapas de aço laminadas a frio, a quente ou revestidas, para aplicaçõoes industriais em geral. This specification covers the requirements and dimensions for electric resistance welded carbon steel pipe round, square, rectangular, or special shape, produced from cold- or coated steel coil, for general industrial purpose. According previous agreement, special shapes, as well other dimensions not specified in Annex A may be furnished. In this case the dimensions and tolerances for special shapes shall be agreed.