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.