730661: Of square or rectangular cross-section; 730669: Of other non-circular cross-section; Longitudinally welded (HS 730531); Other, welded, of circular cross-section, of iron or non-alloy steel (HS 730630); Other, welded, of circular cross-section, of stainless steel (HS 730640); Other, welded, of circular cross-section, of other alloy steel (HS 730650)
Proyecto de Tercera Revisión del Reglamento Técnico Ecuatoriano PRTE INEN 027 (3R) "Tubos de Acero al Carbono Soldados" (Draft third revision (3R) of Ecuadorian Standardization Institute Technical Regulation (PRTE INEN) No. 027 "Welded carbon steel pipes and tubes") (11 pages(s), in Spanish)
The notified Technical Regulation establishes the requirements to be met by welded carbon steel pipes and tubes (with weld seam), prior to the marketing of domestic and imported products, with the aim of protecting human safety and preventing misleading practices.
The notified Technical Regulation applies to the following products:
· Welded black galvanized carbon steel pipes and tubes with seams for the conveyance of liquids;
· Welded carbon steel pipes and tubes for general and structural purposes;
· Metal piping for electrical purposes;
. Pipes and tubes for combustion systems for domestic cooking appliances burning gas fuel.