Isibars, incorporated as Khanna & Roy Heavy Engineering in 1987 and was executed a strategic acquisition of by the present promoter H L Gupta assumed full control of the firm in 1990 and renamed it as Isibars in May 1991. The company manufactures and markets alloy steel, stainless steel rolled and cold-drawn products of various sizes and sections (inst. cap. : 40,000 tpa). Later Isibar assumed full control of the steel division of Zenith comprising the steel melting and rolling unit at Khopoli, Maharashtra.

Drawn stainless steel bars and bright bars, being corrosion-resistant, are used in the automobile, textile, machine tool, chemical, food, dairy and marine industries. Stainless steel flats are cold-rolled and used to manufacture stainless steel utensils.

The company increased its capacity for cold-finished bars to 10,000 tpa. The company's expansion-cum-backward integration project at Khopoli has been implemented and it started production from July, 1998 with a cost of Rs 120.52 crs.

In 2000-01 the company issued and allotted on private placement basis to ICICI Ltd, Secured Cumulative Zero Coupon Optionally Fully Convertible Debentures of the face value of Rs.53.31 cr at a discounted value of Rs.23.50 cr and Secured Non convertible Debentures of Rs.14.52 cr at a discounted value of Rs.6.4 Cr. The company made a reference to BIFR due to erosion of networth.