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The
Bashundhara Steel Complex (BSCL) is located
in Jagir, Manikganj, about 65 kms from the
Dhaka city and 35 kms from the main river
port of Aricha on the Jamuna river, on the
Asian Highway. Three lines of products are
currently being manufactured at this facility:
(1) Mild steel (MS) deformed bars, angles
and steel channels, (2) MS and GI pipes
of different diameter, and (3) steel cylinders
for containing LP gas.
The
steel re-rolling unit was established in
the year 2000 with a capacity of producing
25,000 tons of deformed bars per annum.
In order to meet increased domestic demand,
a second plant was commissioned. As a consequence,
the production capacity rose to 50,000 tons
per annum and the range of products was
enlarged to include angles, channels, and
flat bars, in addition to deformed bars.
The enterprise uses imported steel scrap
that is mixed with segregated scraps obtained
from ship-breaking yards. This selected
proper charge mix is then melted in high-frequency
induction melting furnaces to obtain a homogenous
molten metal at proper temperature. Appropriate
quantities ferro-alloys are then added to
the molten metal. Through a series of other
technical processes and after careful chemical
control, the product of these induction-melting
furnaces is rolled in a 16-inch roughing
mill to obtain billets of desired size and
specifications. These billets are then fed
into a 10-inch finishing mill that is equipped
with repeaters in order to ensure a continuous
production line of deformed bars.
The
BSCL also manufactures MS and GI pipes that
are
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mainly used for modern water supply systems
and irrigation. The pipe mill has a precision-engineered
welding plant, imported from the UK. The
unit has a galvanising section with a
zinc kettle imported from Japan. The plant
uses imported zinc slabs of near-perfect
purity level.
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The
pipes are made as per British Standard Specification
of BS-1387/1998. The pipes are marketed
under four brand titles and they come in
varying bore sizes and wall thickness. The
LP gas cylinder-manufacturing unit was set
up in 1999 with an installed capacity of
producing 500,000 cylinders per annum. The
principal raw material, hot rolled coil
of 3.2 mm thickness is imported from Japan
and is cut to specified sheet sizes in a
shearing machine. After cutting the sheets
into a circular shape, they are pressed
in a hydraulic power press of 500 metric
ton capacity to form a half-capsule. Two
halves of capsules thus made are then welded
in a submerged welding unit under controlled
pressure and temperature. The valve guards
and foot rings are also manufactured at
the BSCL. The finished cylinders are tested
for stress-taking capability through hydraulic
tests (burst test) and gas pressure tests.
The finished cylinders are normally used
to hold natural gas, butane and propane.
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