The largest integrated manufacturer of precision seamless tubes, tubular components, and steels in the Asia Pacific Region (erstwhile The Indian Seamless Metal Tubes Limited) ISMT Limited was incorporated in the year 1989 by a group of technocrats to produce specialized seamless tubes in India. ISMT is QS 9000 and ISO 9002 approved and also ISO/TS16949: 2002, ISO 14001, OHSAS 18001 certified company moving with the two main divisions as Tube and Steel divisions. Apart from tubes, ISMT Limited also manufactures a wide range of value added products for each of these industries. These include items such as bearing rings, gear blanks, shifter sleeves, cages for constant velocity joints, swaged & machined axles, threaded and coupled casings, couplings and a host of similar products. The group companies include ISMT North America, Taneja Aerospace and Aviation Limited (TAAL), Structo Hydraulics AB, Sweden and ISMT Europe, Sweden.
ISMT has one of the most modern alloy steel plants in India. The factory, located at Jejuri (within a 100 km radius of ISMT's Tube plants) has a capacity of 190,000 MT per annum. Product Range ISMT is one of the largest and most diversified manufacturers of specialized seamless tubes in the world producing tubes varying from 6mm to 273mm. The tube plants of ISMT Limited at Ahmednagar and Baramati are both within a radius of 100 kms of Pune, where ISMT is headquartered. In the year 1990, the production capacity of the company was raised to 50,000 metric tons per annum with the addition of a second Assel Mill. The Indian Seamless Metal Tubes Limited promoted another company during the year 1995 under the name of Indian Seamless Steels and Alloys Ltd. (ISSAL), to produce alloy steel, the raw material used in the manufacture of seamless tubes.
In April of the year 2000, the company had acquired Kalyani Seamless Tubes Ltd. (KSTL). The Indian Seamless Metal Tubes Ltd and Indian Seamless Steels and Alloys Ltd merged in the year 2005, resulted the ISMT Limited was born. The Company had changed its name from the Indian Seamless Metal Tubes Limited to ISMT Limited in end of the year 2005. During the year 2005-06, the wholly owned subsidiary Indian Seamless Power Limited was ceased to be a subsidiary company. During the year 2007, in the month of June, ISMT through its subsidiaries and affiliates had acquired 100% stake in Structo Hydraulics (Structo). Structo Hydraulics is engaged in manufacturing of tubular components for the hydraulic cylinder industry, with an annual turnover of Rs 3,000 million. As at July 2007, the company received an ISO 14001 and OHSAS 18001 certifications for its Environment, Health & Safety implementation.
The Company is currently using the de-bottlenecking and modernization process to raise its capacity in the immediate future. It plans to increase the 1,55,000 tpa tube capacity to 2,00,000 tpa. Moreover, the steel capacity of the company which is already manufacturing at the rate of 2,40,000 tpa will be raised to 3,50,000 tpa.