They constitute a semi-finished steel product (which in the majority of cases is then subject to further transformation in view of producing a broad variety of finished goods), and the production process is similar, using similar machines, such that producers can switch between different variants of the product, according to demand.
Traat kujutab endast terasest pooltoodet (mida enamikul juhtudel töödeldakse täiendavalt, et toota laia valikut valmistooteid) ning hõlmavad sarnast tootmisprotsessi, milles kasutatakse sarnaseid seadmeid ning mis võimaldab tootjatel lülituda ühe tootevariandi tootmiselt teise variandi tootmisele vastavalt nõudlusele.