Hot rolled (Hot rolled), wato zafi mai zafi, yana amfani da slab (mafi yawan ci gaba da simintin simintin gyare-gyare) a matsayin ɗanyen abu, kuma bayan dumama, sai a sanya shi ya zama karfen tsiri ta hanyar injin niƙa da gamawa.Zafin karfen mai zafi daga injin niƙa na ƙarshe na gama jujjuyawa ana sanyaya shi zuwa saita zafin jiki ta hanyar kwararar laminar, sa'an nan kuma a nannade shi a cikin coil ɗin karfe ta hanyar coiler, da sanyayayen tsiri na karfe.