DSW supplies seamless steel gas cylinders in 40L configurations for welding, industrial gas distribution, and other compatible compressed-gas applications.
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 9809-1, ISO 9809-3 and other applicable standards depending on the selected model and destination market |
| 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.
Available 40L Gas Cylinder Models
DSW offers a range of 40L seamless steel gas cylinders with different outer diameters and working pressures to meet the requirements of welding gas distributors, industrial gas suppliers, and international projects. The configurations below are based on commonly available ISO-standard cylinder designs.
| Model | Standard | Water Capacity | Diameter | Working Pressure | Height | Approx. Weight | Material |
|---|---|---|---|---|---|---|---|
| ISO219-40-150 | ISO 9809-3 | 40 L | 219 mm | 150 bar | 1,305 mm | 47.8 kg | 37Mn |
| ISO232-40-150 | ISO 9809-1 | 40 L | 232 mm | 150 bar | 1,167 mm | 43.0 kg | 37Mn |
| ISO232-40-200 | ISO 9809-1 | 40 L | 232 mm | 200 bar | 1,156 mm | 44.9 kg | 34CrMo4 |
| ISO232-40-210 | ISO 9809-1 | 40 L | 232 mm | 210 bar | 1,156 mm | 44.9 kg | 34CrMo4 |
| ISO232-40-230 | ISO 9809-1 | 40 L | 232 mm | 230 bar | 1,156 mm | 44.9 kg | 34CrMo4 |
| ISO267-40-150 | ISO 9809-1 | 40 L | 267 mm | 150 bar | 922 mm | 43.3 kg | 37Mn |
| ISO267-40-200 | ISO 9809-1 | 40 L | 267 mm | 200 bar | 922 mm | 43.3 kg | 34CrMo4 |
| ISO267-40-210 | ISO 9809-1 | 40 L | 267 mm | 210 bar | 922 mm | 43.3 kg | 34CrMo4 |
Note: Height and weight are measured without the valve and protective cap. Final specifications, valve configuration, surface treatment, markings, testing requirements, and certification should be confirmed according to the selected cylinder model, gas service, and destination market.
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.
Packaging and Export Delivery
DSW prepares 40L gas cylinders for domestic and international shipment according to the cylinder configuration, destination country, shipping method, and applicable transport requirements.
Typical export packaging options include:
- Protective valve caps or guards to help protect valves during handling and transportation
- Steel pallets or suitable palletized loading for secure handling and container loading
- Shrink wrapping or protective film to help protect the cylinder surface during transit
- Secure container loading and lashing to minimize movement during transportation
- Customer-specific packaging and labeling according to project and destination-market requirements
For export orders, cylinder markings, inspection documents, packaging specifications, labeling requirements, and shipping arrangements can be confirmed with the customer before dispatch.
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