Billets
Billets are semi-finished steel products with a square cross section usually up to 160mm x 160mm. This product is either rolled or continuously cast and is then transformed by rolling to obtain finished products like wire rod, merchant bars and other sections.


At SEML, billets are produced using continuous casting process. The molten steel is continuously cast via a tundish into a water-cooled copper mold causing a thin shell to solidify. This ‘strand’ is then withdrawn through a set of guiding rolls and further cooled by spraying with a fine water mist. The solidified shell continues to thicken until the strand is fully solidified. Finally, the strand is cut into desired lengths and these are either discharged to a storage area or to the hot rolling mill. Our annual billet production capacity is 200,000 MT and we produce billets ranging from 100mmX100mm to 160mmX160mm.


Specification specification is as under

Product/ Grade Size %C %Mn %P %S %Si %Tramp Elements Rhombodity
Billets
MS- Grade 110*110 mm 0.10 - 0.14 0.50 - 0.70 0.035 - 0.060 0.025 - 0.050 0.15 -0.25 %Cr+Ni+Mo+Cu=
<0.05
<5.0 mm
  125*125 mm 0.12 - 0.25 0.50 - 0.70 0.035 - 0.060 0.025 - 0.040 0.15 -0.25 %Cr+Ni+Mo+Cu=
<0.05
<5.0 mm
  160*160 mm 0.12 - 0.25 0.50 - 0.70 0.035 - 0.060 0.025 - 0.040 0.15 -0.25 %Cr+Ni+Mo+Cu=
<0.05
<5.0 mm
Carbon Steel 100*100 mm 0.40 - 0.70 0.50 - 0.80 0.050 Max 0.040 Max 0.35 Max %Cr+Ni+Mo+Cu=
<0.05
<5.0 mm