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 This ‘strand’ is then withdrawn through a set of guiding rolls and further cooled by spraying with a fine water mist.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.


Specification specification is as under

Product/ Grade Size %C %Mn %P %S %Si Rhombodity
Billets
MS- Grade 110*110 mm 0.10 - 0.14 0.30 - 0.60 As per customer requirements As per customer requirements Min 0.10 6 mm max
wirerod
Wire rods are hot rolled products from hot charged billets Specification specification is as under

Product Size Chemical composition UTS (N/mm2) YS (N/mm2) % Elongation
Wire rods 5.5, 6, 7, 8 & 10 mm As per MS grade 470-510 330-370 Min 33

HB Wires- Wire rods are cold drawn to HB wires to sizes 6 SWG to 14 SWG.