Hindustan Dorr-Oliver Limited provides engineering and turnkey solutions primarily in India. The company operates through Engineering, Procurement and Construction (EPC); and Trading; and Manufacturing segments. The company provides heat exchangers comprising diesel product MP steam generators, evaporators, FRAC OVHD trim coolers, LPG vaporizer heaters, splitter thermo siphons reboilers, gas coolers, TAIL gas preheaters, tube debutanizer overhead condensers, U tube stripper feed coolers, and waste heat reboilers. It also offers pressure vessels consisting of emergency air surge drums, close blow down drums, columns with TSRs, deaerators, decanter vessels, digesters, drum slackes, economizers with surge drums, evaporators, flare knock out drums, flash drums, vertical vessels for dispatch, HP air receivers, LPG dryers, SS pressure vessels, C3 rectifier reflux drums, gas separators, volume bottles, and WAO OFF gas knock out drums. In addition, the company provides proprietary equipment, including granulators, screw feeders, spiral classifiers, horizontal pan filters, drum slakers, rake classifiers, precoat filters, component drum filters, motorized lifting device assemblies, air lift aerators, clarifiers, bleach washers, and RVDF drums for the oil and gas, fertilizer, refinery, petrochemical, and power industries. Further, it provides engineering, procurement, construction, and project management services in the minerals and metals, environment, fertilizers and chemicals, pulp and paper, and nuclear sectors. The company was incorporated in 1974 and is headquartered in Mumbai, India. Hindustan Dorr-Oliver Limited is a subsidiary of IVRCL Limited.