Ispat Industries Limited manufactures international standard hot rolled (HR) coils at its Hot Strip Mill (HSM), situated at Dolvi in the state of Maharashtra, India. The production of these coils involves the use of state-of-the-art equipment and manufacturing processes that ensure products of the highest quality.

Ispat's HSM uses a combination of the advanced Conarc Process and Thin Slab Casting technology, which facilitates the rolling of coils that are as thin as 1.2 mm with a width of 1250 mm. These are superior to commercial grade cold rolled (CR) coils, and are quite often a substitute for CR products in certain applications, due to their thinner gauges and finer surface quality.

Applications
Ispat's HR coils are used in the most critical engineering applications and also in certain applications in the automotive sector. In addition, some of the value-added HR coil products include steel for LPG cylinders, API grade, corrosion resistant steel, critical structural application steel, boiler quality, auto grades, precision tubes and medium/high carbon grades, among others.

Unique features of Ispat's HR coils

· Superb surface quality
Enhanced by a 400 bar pressure water jet descaler, currently the highest in the world.

· Superior width to thickness ratio
Ensured by a roll separating force of 40 mega Newtons, making Ispat's HSM the most powerful in the world

· Ease in cold rolling
Facilitated through close control of the finished coil temperature, which in turn regulates the grain size and other physical properties. This is achieved through computer controlled laminar cooling.

· Accurate coil geometry
A crown within 30 microns and flatness of within 20 IUs is achieved through work roll bending with a continuously variable crown.

· Thickness tolerance
Laser enabled automatic thickness and width control produces a thickness tolerance of 30 microns and a width tolerance of + 8mm/0mm.

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