Yankan kayan: Dry na karfe sanyi sawing ya dace don sarrafa low lovoy karfe, matsakaici da ƙananan carbon a ƙasa hrc40, musamman m sassan da ke ƙasa.
Misali, zagaye na karfe, kusurwa karfe, tashar karfe, i-katako, alumin karfe na musamman dole a maye gurbin)