ISMT began life in 1980 as The Indian Seamless Metal Tubes Limited. At the time, the company operated one Assel Mill with an installed capacity of 15,000 metric tons per annum. Subsequently, in 1990, production was increased to 50,000 metric tons per annum with the addition of a second Assel Mill.1995
In 1995, The Indian Seamless Metal Tubes Limited launched a new company, Indian Seamless Steels and Alloys Ltd. (ISSAL), to produce alloy Steel, the raw material used in the manufacture of seamless tubes, giving the company better control over product quality as well as deliveries.2000
In April 2000 The Indian Seamless Metal Tubes Limited acquired Kalyani Seamless Tubes Ltd. (KSTL), a competing manufacturer of seamless tubes. The combined entity, which retained the name The Indian Seamless Metal Tubes Ltd, not only had a larger capacity (150,000 metric tons per annum) but also a much wider size range (from 6mm to 273 mm).2005
In 2005 The Indian Seamless Metal Tubes Ltd and Indian Seamless Steels and Alloys Ltd merged to form ISMT Limited.2007
In 2007, ISMT acquired Structo Hydraulics AB. Based in Stor fors, Sweden, Structo is among Europe’s leading suppliers of tubes and engineering products for the hydraulic cylinder industry. Structo Hydraulics AB has more than 400 years experience in the fi eld of iron and steel processing. Structo’s product range includes cold drawn seamless tubes, cold drawn welded tubes, roller burnished cylinder tubes, cold formed tubes, and components.2008
In 2008 ISMT added a brand new PQF Mill. With this addition, ISMT’s tube making capacity increased from 150,000 MT/ annum to 450,000 MT/annum. Simultaneously, steel making capacity has also increased from 250,000 MT/annum to 350,000 MT/annum with the addition of a second Ladle refi ning furnace.