Group Companies

IOT has been providing end-to-end EPC solutions to its clients through its various business verticals and group companies:

Central Engineering Services (CES)

IOT’s Central Engineering Services (CES) department provides Design and Engineering services to clients globally.

CES has high quality cross-discipline engineers and designers to cater to the following verticals:

  • Oil & Gas
  • Water & Waste Water
  • Power

Additionally, CES leverages experience of IOT’s parent company,Oiltanking, to design large Oil Terminals. With state-of-the-art software across discipline, CES provides the following services:

  • Front End Engineering Design (FEED)
  • Detail engineering
  • Procurement services
  • Project Management services
  • Construction services

Since its inception in 2007, CES has completed prestigious projects for global clients operating from its offices at Mumbai and Kolkata.

IOT Engineering Projects Ltd

The Mumbai-headquartered IOT Engineering Projects Limited (IOTEP) is a wholly owned subsidiary of IOT. IOTEP offers heavy construction and erection services for the installation of Refineries, Petrochemicals, Fertilizers, Power and Cement Plants. The services offered by IOTEP include:

  • Civil, Mechanical / Electrical & Instrumentation works Construction of:
    • Petrochemical Plants
    • Refineries
    • Heaters/Crackers/Reformers
    • Power Plants
    • Fertilizer Plants
    • Metallurgical / Pharmaceutical & other chemical plants
  • Shutdown and annual turnaround contracts for repairs, revamp and re-conditioning of large industrial projects.

IOT Anwesha Engineering & Construction Ltd

IOT Anwesha Engineering and Construction (IOTAEC), formerly AnweshaComtech, was acquired by IOT in 2008.Headquartered in Vadodara, Gujarat, IOTAEC has achieved an enviable record in design, fabrication, erection, welding and commissioning of cone, dome and floating roof tanks as well as large storage tanks, pressure vessels, silos and spherical tanks (spheres).

IOTAEC also undertakes construction of structurals, piping and associated facilities for refineries, terminals and chemical, fertilizer and water treatment plants. Currently, IOTAEC has three manufacturing units at Savli to serve the growing needs of its clients in the refinery, petrochemical, fertilizer, chemical, power and energy sectors.

Over the years, IOTAEC has acquired competence to execute industrial civil works such as tank foundation, equipment foundation, pipe sleepers and racks, plant & utility buildings, roads, drains, dykes, boundary wall etc. making it IOT’s civil and infrastructure construction arm.


IOT Engineering & Construction Services (IOTECS) Oman is IOT’s EPC arm in Oman. It was formed to explore EPC opportunities in the hydrocarbons space and after successfully completing the Sohar Terminal for OiltankingOfdjell atSohar, the company is now undertaking the EPC projects for storage tanks for Petrofac-Daelim at the Sohar Refinery Upgradation Project.

IOT EPC Indonesia

IOT EPC Indonesia was formed to explore EPC opportunities in the oil and gas space in South East Asia. Currently, the subsidiary is implementing the construction of tank farms in Karimun for Oiltanking and in Kalimantan for a Joint Venture of Bakrie-Petroleum and BP Singapore respectively.

IOT VITO, Turkey

IOT VITO is a joint venture that was formed between IOT and VITO to develop infrastructure in the oil and gas industry in Turkey. The JV is currently implementing a project for the EPC of tanks and spheres for the SOCAR refinery in Aliaga, Turkey.


Jabal EILIOT is a joint venture (JV) between Jabal Dhahran Company Ltd., Saudi Arabia, Engineers India Ltd. (EIL), and IOT. Headquartered in Al-Khobar, Saudi Arabia, Jabal EILIOT was formed to cater across the entire value chain in the hydrocarbons sector (upstream and downstream), energy and infrastructure sectors in the Saudi Arabia region.

Stewarts & Lloyds

In 2004, IOT acquired a majority stake in Stewarts and Lloyds of India Ltd. (S&L), a leading fabrication, piping and fluid handling system engineering company that was established in Kolkata in 1937. S&L’s workshops in Khidderpore and Jhinjirapol in Kolkata, provide world-class Fabrication and manufacturing of key EPC components such as Economizer Coils, Heat Exchangers and Boiler’s Skirts and Hoods.