Mrs. Nirmal Aggarwal started her own organisation in 1983 with the name of Nirmal Overseas Private Limited is a premier engineering company which manufactures complete machines on Turnkey basis for Galvanised steel tube and pipes, API Pipes Up to 20” NB Size. Nirmal Overseas Private Limited is the first company in India which started to manufacture a wide range of HF / RF Tube Welders and Induction Heaters and Entered in technical collaboration with M/s ALIENTECH LTD., U.K. The Welders are available in output powers from 60 kW to 1000 kW at a standard frequency of 250-500 kHz. Nirmal Overseas Private Limited has supplied more than 1500 HF / RF Tube Welders to the Domestic Indian Market and 25 countries in the International market. The Grand success in Vacuum Tube Welder, Nirmal Overseas Private Limited started to Make Solid State Welders Capacity Up to 1000KW in terms to save the energy more than 25% compared to the Vacuum tube welder.Through Continuous Research and development Nirmal Overseas Private Limited Manufacture Complete Turnkey projects for Galvanised steel tube and pipes, API Pipes Up to 20” NB Size. Nirmal Overseas Private Limited is well equipped with latest Plant and Machinery structure galvanising plant Facilities to meet Our International Client Standards and their quality.

Top Exporters Award by EEPC India during 2014-15, The 47th Export award Northern region by The Minister of Industry UP, 
 A.R. Bhatt Entrepreneurship award during 1984, awarded by Honorable former Vice- President Of India Mr. R Venkataraman. 
The president of India Honorable Mr.  C.Venkatraman as the Top Ten Exporter in 1997.

Recognition of Highest Export During 1996-97, Awarded By- Honorable former prime Minister of India, Mr. Atal Bihari Vajpayee, Category- Project services. 
 Top 10 Asian Brand Excellent Female Figures during 2017-18 awarded by ABBAS Expert Committee. 
Export House 

CE Certificate 
Top ten Asian brand Excellent female figure of quality products award, Hongkong 2017

In the course of time since inception Nirmal Overseas Private Limited  has successfully executed more than 1500 prestigious projects all over the world.