DSW is a trusted manufacturer and global exporter of CNG gas cylinders, certified to ISO 9001 and IATF 16949 for quality management systems. Our production also complies with ISO 9809, ISO 11439, and ECE R110 standards for compressed natural gas cylinder safety and performance.
Reliable CNG Solutions for Every Application
DSW offers a comprehensive range of CNG cylinders designed for light-, medium-, and heavy-duty vehicles, as well as refuelling stations and transportation trailers. Our cylinders are widely used by truck, transit, and waste collection fleets seeking a clean and economical fuel alternative.
Type 1 CNG cylinder Size Chart
Technical Specifications
- Diameter Range: 140 mm – 660 mm
- Capacity: 10 – 700 litres
- Working Pressure: Up to 700 bar
- Material: Seamless 4130X chromium-molybdenum steel
- Standards: ISO 9809-1/3, ISO 11439, EN, DOT
These cylinders are engineered to withstand working pressures of 20 MPa or 25 MPa and are manufactured using precision forming and heat treatment processes to ensure long-term reliability and resistance to corrosion.
compressed natural gas
CNG production requires long and complex steps. In the end, CNG remains gaseous, with essential substances such as methane, nitrogen, CO2, propane, and ethane still contained.
CNG offers superior heating values compared to petrol; where 10 litres of petrol would take a car 100 km, only 6-7 litres of CNG would be required.
CNG Gas Cylinders, which can store natural gas under pressure 20MPa or 25MPa, are made of 4130X
seamless steel tube with ISO9809-1/ISO9809-3/EN/DOT approval.
which are explosive pressure vessels containing flammable and explosive gases.
The storage pressure for automotive cylinders is 20 MPa.
DSW CNG Cylinder Production Line—High-precision automated manufacturing of ISO11439-certified CNG cylinders for trucks and commercial vehicles.This video offers an inside look at the DSW CNG cylinder production line, showcasing advanced forming, heat treatment, and inspection processes.
Types of CNG Cylinders
- Type 1 (CNG-1): Seamless alloy steel cylinders.
- Type 2 (CNG-2): Composite cylinders with steel or aluminium liners reinforced by hoop-wound fibres.
- Type 3 (CNG-3): Aluminium-lined composite cylinders fully wrapped with carbon fibre.
- Type 4 (CNG-4): Plastic-lined composite cylinders fully wound with carbon fibre and reinforced with glass fibre.
Each cylinder type is developed for different weight, performance, and cost requirements, giving customers flexible options for diverse vehicle or industrial applications.
The main cylinders used worldwide are steel cylinders, generally made from high-quality
chromium-molybdenum steel, and the ISO 11439 and ECE R110 standards can be meet
the requirements of most countries.
CNG pressure in bar
Worldwide, most vehicle cylinders are rated to handle a working pressure of 3,000 psi (200 bar);
However, in the US, the standard pressure rating for vehicle cylinders is 3,600 psi (250 bar).
How much gas is in a CNG cylinder?
A 12 kg cylinder contains 60 litres of water; 5 litres equals one kilogram; therefore, its maximum CNG load capacity is 10 kg, depending on the pressure in its gas station.
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