The method includes hot rolling an extra low carbon steel slab containing titanium and {HEAD ~ columbium} to sheet or {TAIL ~ strip}, cold rolling, box annealing and temper rolling 
to
The method includes hot rolling an extra low carbon steel slab containing titanium and { HEAD ~ columbium } to sheet or { TAIL ~ strip } , cold rolling , box annealing and temper rolling
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH