Galvanized square steel pipe is a hollow square section steel pipe with square cross-section shape and size that is formed by cold bending and high-frequency welding using hot-rolled or cold-rolled galvanized strip steel or galvanized coil as blank.Eđa geislatækt réttarhornstúpa úr kalt mynduðu holu stálspípu sem undirbúin er á undan og síðan framleiðsluð með hita dúfu geislatækni.