CNG cylinder for vehicles, as 
Nominal outside diameter: 406 (mm) 
Design wall thickness: 8.8 (mm) 
Nominal capacity: 100 (L) 
Nominal length: 1023 (mm) 
Nominal weight: 100 (kg) 
Working pressure: 20 (mpa) 
Hydraulic test pressure: 30 (mpa) 
Liner material: 34crmo4 
Production standard: ISO 
Nature of filling medium: CNG