Galvanized square steel pipe is a hollow square section steel pipe with a 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 the blank. Ili galvanizirana ravnogulna cijev od hladnoformirane rupne čelične cijevi, pripremljene unaprijed, a zatim se obrađuje vrućim gumom galvaniziranjem.
