Abstract:
Carbon steel and galvanized carbon steel pipes are widely used in water transport, as they combine a relatively low cost with good mechanical strength. Although widely used, these pipes are subject to internal and external corrosion due to factors such as the type of pipe used, the quality of water circulating inside it, the mode of operation and the conditions and locations of installation. Recent cases where carbon steel and zinc-coated carbon steel pipes used in raw water transportation had perforations after a short time of use led the Corrosion and Protection Laboratory of IPT to study the factors related to their performance under such conditions. This paper analyzes the influence of internal factors such as the use of seamed or seamless pipes, the presence or absence of zinc coating and water characteristics. Regarding corrosion from the external surface, the most important factors to consider such as soil corrosivity and the presence of leakage currents will be discussed. Methodologies used to evaluate soil and water aggressiveness will be presented, as well as other commonly used tests and measures, complemented by information obtained from the literature consulted.
Reference:
PAGATTO JÚNIOR, Sidney Oswaldo; ALMEIDA, Neusvaldo Lira de. Corrosion in carbon steel and galvanized carbon steel pipes used to transport drinking and industrial water. In: INTERNATIONAL CORROSION CONGRESS, 21., AND THE INTERNATIONAL CORROSION MEETING, 8., 2021, São Paulo. (on-line). Proceedings on-line.. 3 p.
Log into BiblioInfo Biblioteca-DAIT/IPT to access the text in PDF. Document is password protected, ask Customer Service/Library-DAIT/IPT:
https://escriba.ipt.br/pdf_restrito/177393.pdf
Carbon steel and galvanized carbon steel pipes are widely used in water transport, as they combine a relatively low cost with good mechanical strength. Although widely used, these pipes are subject to internal and external corrosion due to factors such as the type of pipe used, the quality of water circulating inside it, the mode of operation and the conditions and locations of installation. Recent cases where carbon steel and zinc-coated carbon steel pipes used in raw water transportation had perforations after a short time of use led the Corrosion and Protection Laboratory of IPT to study the factors related to their performance under such conditions. This paper analyzes the influence of internal factors such as the use of seamed or seamless pipes, the presence or absence of zinc coating and water characteristics. Regarding corrosion from the external surface, the most important factors to consider such as soil corrosivity and the presence of leakage currents will be discussed. Methodologies used to evaluate soil and water aggressiveness will be presented, as well as other commonly used tests and measures, complemented by information obtained from the literature consulted.
Reference:
PAGATTO JÚNIOR, Sidney Oswaldo; ALMEIDA, Neusvaldo Lira de. Corrosion in carbon steel and galvanized carbon steel pipes used to transport drinking and industrial water. In: INTERNATIONAL CORROSION CONGRESS, 21., AND THE INTERNATIONAL CORROSION MEETING, 8., 2021, São Paulo. (on-line). Proceedings on-line.. 3 p.
Log into BiblioInfo Biblioteca-DAIT/IPT to access the text in PDF. Document is password protected, ask Customer Service/Library-DAIT/IPT:
https://escriba.ipt.br/pdf_restrito/177393.pdf
