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

 

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.

 

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.

 

 


© All rights reserved. BASHUNDHARA GROUP 2003