Plates 
JSPL has taken another step towards it
spirit of bringing first of their kind products in to the country. JSPL
commissioned its 1 million tonne per annum capacity 3.5 meter wide Plate
mill on 31st March'2007, which has a Steckel rolling facility equipped with
level-2 automation system.
JSPL's plate mill can supply -
- Plates in thickness ranging from 6 mm to 150 mm, in widths
ranging from 1500 mm to 3500mm and lengths from 3 meter to 12.5
meter (or as per requirement).
- Coils in thickness ranging from 6 mm to 16 mm in widths ranging
from 1500 mm to 3000mm with a maximum coil weight of 30 MT.
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Backed by state-of-the-art steel making
and refining facilities and a slab caster of upto 2600 mm maximum width,
plans are afoot at JSPL to develop and supply coils and plates in a variety
of steel grades to serve wide ranging applications for the user industry.
These will include general engineering and structural grades, Hi-Tensile
grades, Boiler quality & Pressure Vessel grades, Shipbuilding grades,
API grades upto X-80 quality for the Line Pipe industry, Wear resistant,
Corrosion resistant, and HSLA grades. Plates can be supplied in as per
Indian as well as equivalent international standards such as ASTM, BS, EN,
DIN, etc.
The mill uses slabs in thickness 215, 250, and 280 mm, which are reheated
in a 200 MT/hr capacity walking-beam type reheating furnace. High pressure
primary and secondary descalers operating at a pressure of 200 bar are used
for descaling. Rolling is done in a 2-Hi roughing mill with a cross-rolling
facility and a vertical edger with automatic width control feature and
thereafter in a 4-Hi reversing type-finishing mill with Steckle furnaces on
the entry and exit side. Plates can be produced with an "Accelerated
Cooling Control (ACC) " system to achieve normalised rolling (on-line
normalising) properties in plates.
The mill is equipped with a hydraulic
automatic gauge control system and X-ray gauge for thickness control. The
mill is installed with an on-line heavy leveler after finishing for flatness
control and a shearing facility for cutting of plates into required lengths.
Inspection facilities include on-line ultrasonic testing facility, on-line
plate tilting facility for both surface inspection, and a host of modern
laboratory facilities to ensure strict quality control on plates as per the
product development plan. Orders are already being accepted by the mill for
both domestic and export sales.
3.5 meter wide plates and 3.0 meter wide coils from JSPL's Plate mill are
attracting a great deal of interest from the designers and end users across
the Indian industry due to their extended dependence on imported plates at
high costs.
The key features of JSPL's Plates and coils that give them an edge over the
rest are :
- Widest available widths in the country.
- Wide range of possible steel grades.
- High degree of steel quality due to negligible inclusions.
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