| Inspection Division | Engineering Division |
 Aker Solutions India Sdn Bhd |
Defence Research & Development Orgn (DRDO) |
| Alston Infra Projects |
Advanced Naval Systems Programme (ANSP) |
| BJ Shirke |
Armament Research and Development Establishment (ARDE) |
| Bridge And Roof Ltd |
Advanced Systems Laboratory (ASL) |
| Control union Testing And Inspection |
Defence Research & Development Laboratory (DRDL) |
| Coromandel International Ltd. |
Usai Forge (P) Ltd. |
| Gujarat State Petroleum Corporation |
BEML Limited, Bangalore |
| Hindustan Petroleum Corporation Ltd. |
|
| John Energy |
|
| Kakinada Marine & Offshore Comples Ltd. |
|
| Majjan Equipment And Machinery Llc. |
|
| Oil And Natural Gas Corporation Ltd. |
|
| Oil India Ltd. |
|
| Punj Lioyd Ltd. |
|
| Reliance Gas Transportation Infrastructure Ltd. |
|
| Reliance Industries Ltd. (Gadimoga) |
|
| Reliance Industries Ltd. (Vakalpudi) |
|
| SB Darron Pte Ltd. |
|
| SG Shirke Construction Technology Pvt. Ltd |
|
| Sri Surya Engineering Works |
|
| Sri Ramdas Motor Transport Ltd. |
|
| Srinivasa Transport |
|
| Swamina International Pvt. Ltd. |
|
| Sharpooji Pallionji & Co. Ltd. |
|
| SGS India Pvt. Ltd. |
|
| Visakhapatnam Steel Plant |
|
| And many more...... |
