DSW supplies 40L welding gas cylinders manufactured from high-strength seamless steel for the storage and distribution of commonly used industrial and welding gases. The 40L cylinder format is suitable for fabrication shops, welding contractors, gas distributors, industrial facilities, and other applications requiring reliable high-pressure gas storage.
Depending on the gas service, applicable standard, valve configuration, and customer requirements, 40L cylinders can be supplied in different pressure configurations, including 150 bar and 200 bar options.
DSW supports OEM specifications, valve selection, surface finishing, inspection, protective packaging, and export shipment for international customers.
40L Welding Gas Cylinder Specifications
The 40L cylinder is a widely used format for compressed welding and industrial gases. The final cylinder specification depends on the gas, working pressure, applicable standard, valve, and destination-market requirements.
| Item | Specification |
|---|---|
| Product | 40L Welding Gas Cylinder |
| Water Capacity | 40 L |
| Construction | Seamless steel |
| Working Pressure | 150 bar or 200 bar, depending on configuration |
| Test Pressure | According to the applicable cylinder standard and approved design |
| Gas Service | Argon, CO₂, oxygen, nitrogen and other compatible compressed gases |
| Valve | Selected according to gas service, pressure and destination market |
| Standard | ISO 9809 and other applicable standards, subject to specification |
| Surface Treatment | Painting or coating according to customer requirements |
Note: Final dimensions, wall thickness, weight, working pressure, test pressure and valve specifications should be confirmed against the approved cylinder design, standard and gas service before production.
40L × 150 Bar Welding Gas Cylinders
The 40L × 150 bar gas cylinder configuration provides a practical solution for compressed welding gases where a 40L water capacity and 150 bar working pressure are required.
These cylinders can be configured for suitable gases such as argon, nitrogen and other compatible compressed gases, subject to cylinder certification and valve requirements.
Typical Applications
- Welding workshops and fabrication facilities
- Metal fabrication and maintenance
- Shielding gas supply
- Industrial gas distribution
- Gas storage and cylinder exchange systems
40L × 200 Bar Welding Gas Cylinders
For applications requiring a higher working pressure, DSW can supply 40L × 200 bar gas cylinders, subject to the applicable design standard, material specification, gas service and certification requirements.
The 200 bar configuration can provide greater gas storage capacity within the same nominal 40L water-capacity format compared with a 150 bar configuration. The actual filled gas capacity depends on the gas properties, filling pressure, temperature and applicable regulations.
For export projects, DSW can confirm the required cylinder standard, valve, markings, inspection and documentation before production.
Valve Options for 40L Gas Cylinders
The cylinder valve must be selected according to the gas service, working pressure, connection standard and destination market. DSW can configure cylinders with suitable valve options for different international requirements.
Valve Selection Factors
- Gas type and compatibility
- Working pressure
- Outlet connection
- Destination-market standard
- Regulator compatibility
- Customer filling and distribution requirements
Valve configurations can be supplied according to customer drawings, specifications or approved samples. For oxygen service, oxygen-compatible valves and components should be specified appropriately.
Gas Options for Welding Applications
40L cylinders can be configured for different compressed gases used in welding, fabrication and industrial applications. The gas service determines the appropriate cylinder specification, valve, cleaning requirements, markings and applicable certification.
Argon Gas Cylinders
Argon is widely used as a shielding gas for TIG welding and is also used in MIG welding, particularly when welding materials that require an inert shielding atmosphere.
Carbon Dioxide Gas Cylinders
CO₂ is used as a shielding gas in welding applications and can also be supplied as part of argon/CO₂ shielding-gas mixtures. Cylinder specifications and valves should be selected according to the intended gas service.
Oxygen Gas Cylinders
Oxygen is commonly used in oxy-fuel cutting, heating and related industrial applications. Oxygen cylinders require appropriate oxygen-service components, cleaning and handling procedures.
Nitrogen Gas Cylinders
Nitrogen is used for purging, blanketing and certain fabrication and industrial processes. The cylinder and valve configuration should be matched to the required nitrogen purity, pressure and application.
40-litre welding gas cylinders
DSW has extensive experience developing and sourcing on-time services to meet customers’ specifications or quantities and processing various gas cylinders.
We hold ISO certification from the International Standardisation Organisation and certifications from the DOT of America, TUV Germany, and KGS Korea – among others.
We use these cylinders widely in various welding techniques. For instance, MIG welding standardises on argon and carbon dioxide mixtures, while TIG welding frequently utilises pure argon.
Acetylene and oxygen cylinders are paired in oxy-fuel welding and cutting applications.
At Welding For Less, we aim to be your one-stop provider for all your welding operations.
We stock supplies and equipment necessary for every project imaginable—including welding gas cylinders for argon, nitrogen, helium, and carbon dioxide, as well as shielding gases to help create an atmospheric barrier around your welding area and produce clean welds.
Welding Gas Tank Specification
| Model Number | 50L-267mm-200Bar | 40L-219mm-150Bar |
| Pressure | High | |
| Brand Name | DSW | |
| Type | 50L/200Bar | 40L/150Bar |
| Outside Diameter | 267mm | 219mm |
| Height | 1119mm | 1305mm |
| Working Pressure | 200 Bar | 150 Bar |
| Test Pressure | 300 bar | 250 Bar |
| Certification | TPED | ISO/TPED/GB |
| Wall Thickness | 37Mn/5.8mm | 37Mn/5.7mm |
| Weight | 51.3kg | 47.8kg |
| Standard | IS09809 | IS09809 |
| Water Capacity | 50 L | 40 L |
Different Types Of Welding Gases
Various gases—including elemental gases like argon, oxygen, helium, nitrogen, and hydrogen- and compounds such as carbon dioxide, acetylene, propane, and propylene—are commonly used in welding.
These gases can be blended to create custom mixtures tailored to specific welding processes and materials.
40L Welding Gas Tanks filled with Acetylene
is a colorless, flammable gas with an odor similar to garlic.
Gas Welding Tank Sizes
Packing and Delivery
We ensure safe and secure packing for all gas cylinders, using protective caps, steel pallets, and shrink-wrap for added stability.
Cylinders are delivered efficiently by road, sea, or air, with full compliance to international transport regulations and safety standards.
DSW has implemented a rigorous and comprehensive quality control system to guarantee that every welding bottle meets the exacting quality standards specified by our customers.
Our commitment to quality is paramount, and we have established stringent processes to ensure that each cylinder undergoes meticulous inspection before it is shipped.
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