Types of Steel
All steel products are made from semi-finished steel that comes in
the form of slabs, billets and blooms. Though today there are over 3500 varieties of
regular and special steel available, steel products can be broadly classified into two
basic types according to their shape
Flat products
Derived from slabs this category includes plates and Hot Rolled
Steel such as Coils/Sheets. While plates are used for applications such as shipbuilding
etc. HR Steel is the most widely used variety of steel and other downstream flat products
such as Cold Rolled Steel and Galvanised steel are made from it.
HR Steel has a variety of applications in the manufacturing sector. It
is primarily used for making pipes and has many direct industrial and manufacturing
applications, including the construction of tanks, railway cars, bicycle frames, ships,
engineering and military equipment and automobile and truck wheels, frames and body parts.
Cold Rolled Steel is used primarily for precision tubes, containers, bicycles, furniture
and for use by the automobile industry to produce car body panels. Galvanised Steel is
used for making roofs in the housing and construction sector.
(Vide Flow chart I and II)
Long products
These products derive their name from their shape. Made using
billets and blooms they include rods, bars, pipes, ropes and wires, which are used largely
by the housing/construction sector. There are also other products like rail tracks in the
category. (Vide Flow chart I and II)
Semi finished steel is also used to produce other varieties of
specialized steel such as Alloy Steel.
Flow chart I: Blast furnace route for
producing steel

Flow chart II: Electric Arc Furnace route of producing
steel

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