Baja bunder diklasifikasikaké minangka hot rolled, forged lan cold drawn.Baja bunder sing digulung panas ukurane 5,5-250 mm.Antarane wong-wong mau: 5.5-25 mm baja bunder cilik biasane kanggo Strip langsung menyang mbendel saka sumber, umume digunakake kanggo reinforcing bar, bolts lan macem-macem bagean mechanical;Baja bunder luwih gedhe tinimbang 25 mm, utamane digunakake ing pabrik bagian mekanik, pipa baja sing mulus, lsp.