Understanding the Terminologies of Steel Sector

Sheet – Flat finished steel product

Pellet – Mostly used in producing sponge iron

Billets – Semi finished products which are similar to blooms

Blooms – Semi finished products used as inputs

Rebar – Reinforcing steel used as rods

Bearing – A machine element which reduces friction between moving parts

Ingot -Primary solid product obtained upon solidification of liquid steel

Hot Rolled (HR) flat products – Produced by re-rolling of slabs/thin slabs at high temperature (above 1000 Degree C)

Cold Rolled (CR) strips – Produced by cold rolling of HR Strips in Cold Rolling Mills (normally at room temperature)

Coated Products -Cold rolled products coated with metals or organic chemicals

Coking coal – Variety of coal which on heating in the absence of air undergo transformation into plastic state, swell and then re-solidify to give a cake

Coke – Residual solid product obtained upon carbonization of coking coal

Non-Coking Coal (NCC) – Coal of poor coking properties i.e. does not soften and form cake like coking coal during carbonization

Coke oven – silica refractory lined ovens/ chambers

Some abbreviations –

IISI – International Iron and Steel Institute

MTPA – Million Tonnes per Annum

TMT – Thermo Mechanically Treated

MnT – Million Tonnes

CRM – Customer Relationship Management

DRI unit – Direct Reduced Iron unit

OHSAS – Occupational Health and Safety Assessment Series

SMS – Steel Melting Shop

TMT rebar – Thermo Mechanically Treated rebar

MT – Metric Tonnes

TPA – Tonnes per Annum

TPD – Tonnes per Day

TPH – Tonnes per Heat

CTD – Cold-worked Twisted & Deformed

Different types of long products:                             

• Bars & rods
• Wires
• Bright bars
• Rails
• Wire rods

Different types of flat products:

• Strips (wide and narrow)
• Plate
• Sheet