ISO11439 CNG-1 Standard Compressed Gas Cylinder

Compressed Gas Cylinder

CNG cylinders for light-duty vehicles are designed to store compressed natural gas under high pressure, typically ranging from 3,000 to 3,600 psi (pounds per square inch)
Compressed Natural Gas cylinders (CNG cylinders) is a popular alternative with truck, transit and refuse fleets.
Their versatility and efficiency make them a preferred choice for a diverse range of vehicles, from compact cars to heavy-duty trucks, contributing to a more sustainable future for the automotive industry.
DSW is an chinese company specializing in the production of seamless steel and composite cylinders, including CNG cylinders for automotive and industrial applications.

Compressed Gas Cylinder

Compressed gas cylinders are pressure vessels designed for storing and containing gases at a higher pressure than atmospheric. Used in many workplaces for gases ranging from highly flammable (acetylene) to inert (helium), many compressed gas cylinders store gases with up to 2,500 PSIG of pressure for safekeeping – often for welding or cutting steel surfaces. Industrial compressed gas cylinders may also be employed as part of an oxy-fuel welding and cutting system.

What Does Compressed Gas Mean?

Compressed gasses are stored under pressure in cylinders. Liquefied, non-liquefied, and dissolved are three primary types of compressed gases. Pressure in each cylinder is usually measured in pounds per square inch gauge (psig) or kilopascals.

Liquefied gasses are liquid at ordinary temperatures inside cylinders under pressure. Common liquefied gasses include ammonia, chloride, propane and nitrous oxide. Non-liquefied gasses are also known as compressed, pressurized or permanent gasses. Oxygen, nitrogen, helium and argon are all examples of non-liquefied gasses. Acetylene is the only common dissolved gas and is very unstable chemically.

ISO11439 CNG-1 Standard Compressed Gas Cylinder
ISO11439 CNG-1 Standard Compressed Gas Cylinder


CNG gas cylinder application spans various industries and sectors, primarily in transportation and energy. Here are some critical applications:

  • Vehicle Propulsion: One of the primary applications of CNG gas cylinders is in powering vehicles, including:
    • Passenger Cars: Many passenger cars are equipped with CNG cylinders as dedicated natural gas vehicles (NGVs) or as part of a bi-fuel system alongside gasoline.
    • Commercial Fleets: Trucks, buses, vans, and other commercial vehicles often utilize CNG  gas cylinders to reduce fuel costs and emissions, particularly in fleet operations such as taxi services, delivery companies, and public transportation.
    • Off-road Vehicles: CNG cylinders are also used in off-road vehicles such as forklifts, tractors, and construction equipment, providing a cleaner alternative to diesel fuel.
  • Industrial Applications: CNG gas cylinders find applications in various industrial processes, including:
    • Power Generation: CNG can fuel stationary power generation units, such as generators and cogeneration systems, to produce electricity and heat.
    • Manufacturing: Some industries utilize CNG as a feedstock for manufacturing processes, such as in ceramics, glass production, and metal fabrication.
  • Residential and Commercial Use: CNG cylinders can be used in residential and commercial settings for:
    • Heating and Cooking: In areas where natural gas pipelines are unavailable, natural gas cylinders can provide an alternative fuel source for heating homes and cooking.
    • Outdoor Activities: CNG cylinders are used for recreational purposes, such as camping stoves, outdoor grills, and portable heaters.
  • Agriculture: In agricultural settings, natural gas cylinders may power equipment such as irrigation pumps, tractors, and farming vehicles, offering a cleaner and more cost-effective fuel than diesel.
  • Backup Power: natural gas cylinders can serve as backup power sources for critical infrastructure, such as hospitals, data centres, and telecommunications facilities, providing reliable energy during grid outages.

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Advantages of Compressed Gas cylinders

  1. Cleaner Emissions: Compressed gas cylinders, particularly those containing natural gas (CNG), produce fewer emissions than conventional fuels such as gasoline and diesel. This contributes to improved air quality and reduced environmental impact, especially in urban areas where vehicle emissions are a significant concern.
  2. Cost Savings: Compressed gas cylinders can often provide cost savings compared to traditional fuels. Natural gas, for example, is often cheaper than gasoline or diesel on a per-unit energy basis, leading to reduced fuel costs for vehicles and industrial applications.
  3. Energy Security: Compressed gas cylinders can contribute to energy security by diversifying fuel sources and reducing dependence on imported oil. This is particularly relevant in regions with abundant natural gas reserves, where domestic production can enhance energy independence.
  4. Versatility: Compressed gas cylinders can be used in various applications, from vehicle propulsion to industrial processes and residential heating. Their versatility makes them suitable for diverse industries and sectors, providing flexibility in fueling options and energy solutions.
  5. Storage Efficiency: Compressed gas cylinders efficiently store gases at high pressures, enabling a compact and portable energy solution. This is particularly advantageous for applications where space is limited, or mobility is required, such as in vehicles and portable power generators.