Dee Development is an engineering company that specializes in providing process piping solutions for industries such as oil and gas, power (including nuclear), chemicals, and other process sectors. They offer comprehensive services in engineering, procurement, and manufacturing.

The company also produces and supplies a variety of piping products, including high-pressure piping systems, piping spools, high-frequency induction pipe bends, LSAW pipes, industrial pipe fittings, pressure vessels, industrial stacks, modular skids, and accessories such as boiler superheater coils, de-super heaters, and other customized components.

Dee Development operates six strategically located manufacturing facilities in Haryana, Gujarat, Rajasthan, and Thailand, with three of these facilities situated in Haryana. These manufacturing units have a combined annual installed capacity of 94,500 metric tonnes.

The company serves customers in various international markets, including the USA, Europe, Japan, Canada, the Middle East, Nigeria, Vietnam, Singapore, China, and Taiwan. Revenue from contracts with customers outside India amounted to INR 268.59 crore.