Composite Cylinders

Composite Cylinders

A composite cylinder is a type of cylinder that is made up of multiple layers of polymer-wrapped fiber glass.
The layers can include wound materials combined with resin over a metallic or non-metallic layer with a HDPE outer jacket.
Composite cylinders are used in various applications, including gas storage and transportation.
CNG Composite Cylinders for LIGHT-DUTY VEHICLES
Compressed Natural Gas cylinders (CNG cylinders) is a popular alternative with truck, transit and refuse fleets.

Composite Cylinders

Composite cylinders, particularly those constructed with carbon fiber, represent a groundbreaking advancement in storage technology, offering some benefits over traditional metal cylinders.
Since 2007, DSW Industry has produced high-quality composite cylinders and composite air cylinders at competitive prices.
Carbon fiber Cylinders are used regularly in science and engineering buildings, machine shops, and retail and campus dining.

cng composite cylinder, composite cylinder
cng composite cylinder, composite cylinder


Composite cylinders are known for their lightweight construction, providing easy handling and transportation.

One of the standout features of composite cylinders, such as carbon fibre oxygen tanks or carbon fibre propane tanks, is their remarkable lightweight construction. Unlike conventional metal cylinders, which can be heavy, composite cylinders are significantly lighter without compromising strength or durability. This lightweight design enhances portability and reduces strain on equipment and personnel during handling and transportation.

Moreover, composite cylinders boast superior corrosion resistance compared to their metal counterparts. The carbon fiber construction is inherently resistant to rust and degradation, making these cylinders ideal for storing many substances, including oxygen, propane, and compressed air. This corrosion resistance ensures the longevity of the cylinders, reducing maintenance requirements and associated costs.

In addition to their durability and lightweight design, composite cylinders offer enhanced safety features. The advanced materials used in their construction provide excellent impact resistance, minimizing the risk of rupture or leakage even in challenging environments. Furthermore, composite cylinders are designed to withstand high pressures, ensuring the secure containment of gases and liquids under varying conditions.

These carbon composite oxygen bottles are designed for professional firefighters and EMTs.
These carbon fiber cylinders are compact, durable, and resistant to cracking and tearing.
Carbon fiber oxygen cylinders are used in medical facilities, emergency services, and aerospace applications, where reliable oxygen storage is critical.
Carbon fiber propane tanks are used in residential, commercial, and industrial settings for heating, cooking, and manufacturing.


CNG Composite Cylinders

CNG is compressed natural gas.
Natural gas coming from the natural gas pipeline at a pressure min. 2, max 20 bar, and used in houses and industries is increased to 200 bar pressure by a CNG compressor.
CNG cylinders can store natural gas under pressure 20MPa or 25MPa and are made of 4130X seamless steel tubes with ISO9809-1/ISO9809-3/EN/DOT approval.
They are explosive pressure vessels containing flammable and combustible gases.
The storage pressure for automotive cylinders is 20MPa.

Composite Cylinder, CNG Composite Cylinder


TYPE 4 Composite CylinderVolume(L)The outer diameter of the inner bladderLengthPressure


Seamless polymer, welding free
The internal shell is made of special gas-tight PE.
Special design boss
Corrosion-free PE liner
High-pressure resistant carbon fibre wrapped outer liner.
%70 lighter than Type I, II and III.
Light weight reduces transport and work costs
Fatigue-resistant non-metallic liner
20 years of service life
Application on wide range vehicles: cars, buses, trucks, forklifts, boats, ships, locomotives, etc
Tailor-made productions to meet customers’ needs.
Production complies with certifications
Work pressure 207 bar
Test pressure 300 bar
Explosion pressure 470 bar

Loading natural gas requires reaching a pressure of 216 bar, ensuring compliance with international safety standards. CNG gas bottles are calibrated to withstand pressures above 300 bar and are designed to resist up to 450 bar. Cylinders undergo a five-year test period and are labelled accordingly; those retested and relabeled can be used for five years or longer.


Lightweight Composite Cylinders

DSW’s high-integrity composite cylinders feature high capacity and lighter weights throughout the range.
The ultra-lightweight composite cylinder range provides unrivalled portability.