We specialize in high-pressure cylinder testing, cascade management, and turnkey projects, always prioritizing safety and reliability.
Green Gas Group is a leading provider of end-to-end solutions for the CNG and LNG industry. With a strong presence in South India’s key hubs, we deliver unparalleled expertise.
We are the trusted partner for India's top CGD companies, delivering quality and safety.
On-Site Support
Expert testing & maintenance.
Projects Executed with Efficiency.
Decades of Industry Expertise.
Satisfied Energy Partners.
We deliver complete end-to-end solutions for the CNG and LNG industry.
Ensuring safety, reliability, and full PESO compliance for all CNG and industrial gas cylinders.
Certified re-testing, maintenance, and refurbishment for stationary and mobile cascades.
Expert 24/7 on-site support for CNG stations, piping, and critical maintenance.
End-to-end logistics and safety management, backed by our dedicated fleet.
Complete project management, from engineering and metering to storage and conversion solutions.
Specialists in metering, measuring, pressure reduction, storage, transfer, and conversion solutions.
Our motto is "Safety First." All our plants are **ISO 9001-certified** and adhere to strict Standard Operating Procedures (SOPs), verified by **PESO** and leading Third-Party Inspectors (TPIs).
Quality Management System
Petroleum & Explosives Safety
Zero Accident Policy
Third-Party Inspection
Quality Management System
Petroleum & Explosives Safety
Dismantling high-pressure piping, cylinder de-valving & purging to ensure safe preparation.
Meticulous internal cleaning and visual inspection for wear, corrosion, or defects.
Wire brushing and shot blasting to remove old paint, rust, and contaminants.
Weighing and pressurizing the cylinder to test structural integrity and elasticity.
Using advanced ultrasonic waves to detect any invisible internal flaws or cracks.
Hot air process to completely remove moisture and prevent internal corrosion.
Marking the cylinder with the new test date and professionally re-installing the valve.
Final safety leak checks followed by a fresh coat of high-quality paint.
Issuing all official documentation, final testing reports, and compliance certificates.
Setting the standard for safety & reliability since 2010.
Find quick answers about our services, safety standards, and operational expertise.
We provide end-to-end solutions for the CNG and LNG industry, including Periodic Cylinder Re-testing, CNG Cascade Re-testing & Repair, Engineering & Maintenance, Cascade Handling & Transportation, and Turnkey Station Projects.
We are strategically located across South India’s key natural gas and LNG connectivity hubs, with a strong presence in Chennai, Thiruvananthapuram, Cochin, Calicut, Kannur, and Tirupati.
All our plants are **ISO 9001-certified** and adhere to strict Standard Operating Procedures (SOPs). Our processes are verified by **PESO** (Petroleum and Explosives Safety Organisation) and leading Third-Party Inspectors (TPIs).
Our certified 8-step process includes Dismantling, Internal Cleaning & Visual Inspection, External Shot Blasting, Weighing & Hydrostatic Stretch Test (HST), Ultrasonic Flow Detection Test, Internal Drying, Stamping & Valve Re-installation, and a final Leak Test.