Ipleyiti yentsimbi yolwakhiwo:
Isetyenziselwa ikakhulu ukuveliswa kwezakhiwo zetsimbi, iibhuloho, iinqanawa kunye nezithuthi.
Imozulu yentsimbi yepleyiti:
Ukongezwa kwezinto ezikhethekileyo (P, Cu, C, njl.) kunokumelana nokugqwesa okulungileyo kunye nokumelana nokunyuka kwe-atmospheric, kwaye isetyenziselwa ukuveliswa kwezikhongozeli, izithuthi ezikhethekileyo, kunye nezakhiwo zokwakha.
Ipleyiti yentsimbi ekhethekileyo eqengqelekayo:
I-Carbon steel, i-alloy steel kunye nesixhobo sensimbi yesakhiwo somatshini jikelele sisetyenziselwa ukuveliswa kweendawo ezahlukeneyo zoomatshini emva kobunjineli bonyango lobushushu.