Wide variety of high performance steel pipes for infrastructure and automobile usages have been manufactured in UOE and ERW mills of Fukuyama and Keihin works for many years. High performance linepipes such as high strength corrosion resistance, high deformability structural pipes and ERW tubes suitable for hydoforming process
have been developed for needs expected to come in near future. Characteristics of these steel pipes and some features of manufacturing process are introduced in this article.

Welded steel pipe, UOE pipe, Linepipe, Electric-resistant welded pipe, Sour-resistant, Steel pipe for infrastructure, Super-OLAC, Anti-seismic, NK-HIPER, NT column, NKK EAGLE, NK Pilar, Hydroforming, Automobile, Formability, Steel tube