Mpirawo umagawidwa m'magulu awiri: chisindikizo chofewa ndi chosindikizira cholimba.Zitsanzo ndi: mpira wanjira ziwiri, mpira wanjira zitatu, mpira wokhotakhota, mpira wosasunthika, ndi zina zotero, ndi mipira yosiyana siyana yomwe siinasinthidwe kuti igwiritsidwe ntchito.Zolembazo zimapangidwira, kuponyedwa ndi kutenthedwa ndi coil.Zida zomwe zilipo ndi: 304, 304L, 316, 316L, etc.