Engineering steels, or special bar quality (SBQ), is used to describe steel long products
for more demanding processing or end-use applications than can be met by commodity grades.
Products include bright bars, rolled carbon and alloy bars, forged, tool, and stainless steel. These are generally machined, forged or cold drew during subsequent processing.
The main application area is the automotive industry for engine, transmission, steering and
suspension components, but engineering steels are also used for a wide range of industrial
applications including hand tools, oil & gas exploration, and wind turbine components.
Forging is a manufacturing process involving the shaping of metal using localized compressive forces. The blows are delivered with a hammer or a die. Forgings are made
by forcing materials into customized shapes either by the force of a falling ram upon
an anvil or by a die press enclosing a piece of metal and squeeze-forming the part.
The machine forging process, combined with forging materials such as carbon steel, alloys,
and micro alloyed steel, can impart superior metallurgical properties applicable to a wide
range of uses.
Merchant bar refers to carbon steel used in light commercial construction, joist manufacturing,
and industrial and commercial fabrication. This document refers to all carbon flats, hexes,
rounds, squares, and special sections that do not meet the definition of SBQ (special bar quality)
They come in flats, rounds, steel angles, squares, strips, channels – almost any form.
A merchant bar is generally used in structural applications that involves welding, bending,
punching and forming and are commonly found in floor and roof joists, walkways, and railings
Reinforcement steel is a steel bar or work of steel wires utilized as a tension device in reinforced concrete and reinforced masonry structures to fortify and help the solid under strain. Concrete is solid under pressure, however, it has weak tensile strength. Rebar essentially expands the elasticity of the structure.5 Types of Steel Reinforced Bars are used
in Cement Concrete given as following.
- Hot Rolled Deformed Bars.
- Cold Rolled Steel Bars.
- Mild Steel Bars.
- Twisted Steel Bars.
- Welded Steel Wire.
Structural steel is used to construct residential and commercial buildings, warehouses,
aircraft hangers, hospital and school buildings, metro stations, stadiums, bridges, etc.
Construction of these structures is done with the help of structural steel design components
such as channels, beams, angles, and plates. The rolled plates are used in the web and flanges of plate girders, plated beams and chord members, and web members of the truss bridge girders.
The rolled steel plates are used in special plate structures, e.g., shells, rectangular and
circular steel tanks and steel chimneys.
A wire rod is made by drawing the hot metal through shafts. The shafts form and compress the metal
from different sides, thus turning a piece of metal into a long, thin wire. At the end of the rolling mill, this wire is wound on a special winder, with the help of which the rod is rolled into skeins for further cooling. Wire Rod is used for many products. It is the raw material for the wire drawing units. Different uses for the wire rod include wire ropes, springs, electrodes,
barbed wires, steel reinforcement for aluminum conductor and pre-stressed concrete, wire mesh,
fasteners, automobile components, and hardware manufacturers, etc.