Flame-retardant
SALDAFORM®/BLUE
Highly flexible corrugated oxygen hose, ideal for oxyacetylene welding and related processes. The blue colour marks the hose as oxygen-specific per international welding convention. EPDM core and EPDM outer cover give good chemical and temperature tolerance for standard welding applications. Designed as a single-line oxygen hose, compact compared to twin constructions.
- Oxygen-specific (blue)
- EPDM chemical-resistant
- ISO 3821:2019
- Corrugated highly flexible
- −30 °C to +70 °C
- Cut to length
Why this hose?
SALDAFORM®/BLUE is a single-line oxygen hose — the classic blue welding hose. Per international convention, the blue colour is reserved for oxygen hoses; it eases visual identification at a welding station and is a safety convention.
The EPDM construction is chosen for chemical and temperature resistance. EPDM is better than NBR against ozone exposure, which is relevant in daily welding equipment use. For combined oxygen+acetylene distribution, choose the twin variant SALDAFORM®.
Where it is used
In practice SALDAFORM®/BLUE is seen on oxyacetylene welding equipment, smelting applications in ceramics and automotive welding.
The formal product name is SALDAFORM®/BLUE. In daily use: "the blue oxygen hose".
Technical specifications
Specifications are current as of 15 April 2026 and refer to 20 °C unless otherwise stated.
| Material | Inner tube and outer cover: EPDM |
|---|---|
| Colour | Black core, blue outer cover (oxygen convention) |
| Wall construction | Corrugated outer cover, EPDM construction |
| Temperature range | −30 °C to +70 °C |
| Standard | ISO 3821:2019 (specific for welding gas hoses) |
| Cut to length | Yes |
| Manufacturer SKU (model group) | 3250 |
Dimensions and ordering
The table shows the main variants from the manufacturer's factsheet. Fields without a value (—) are not specified. Diameters, pressure values and bend radii are normative; weights and roll lengths are typical production values.
| Inner Ø |
Outer Ø |
Wall thickness |
Working pressure |
Burst pressure |
Bend radius |
Max. length |
Weight |
Roll |
Article no. |
|---|---|---|---|---|---|---|---|---|---|
| 6.3 | 13.3 | 3.5 | 20 | 60 | 40 | 50 | 0.16 | 50 | 3250006000 |
| 6.3 | 16.3 | 5 | 20 | 60 | 40 | 50 | 0.27 | 50 | 3250006001 |
| 8 | 15 | 3.5 | 20 | 60 | 40 | 50 | 0.2 | 50 | 3250008000 |
| 9 | 16 | 3.5 | 20 | 60 | 45 | 50 | 0.22 | 50 | 3250009000 |
| 12.5 | 22.5 | 5 | 20 | 60 | 65 | 50 | 0.41 | 50 | 3250013000 |
| 16 | 26 | 5 | 20 | 60 | 80 | 50 | 0.47 | 50 | 3250015000 |
Overpressure and underpressure values are recommended operating limits; the product can be subjected to higher loads on request. Bend radius is measured along the inside of the hose bend.
Standards and compliance
The hose is certified or documented to the following standards:
- EN ISO 1307:2008. International hose format.
- ISO 3821:2019. Specific standard for welding gas hoses.
- REACH (EC 1907/2006) and RoHS 2011/65/EU. The manufacturer holds declarations of compliance.
Documentation and downloads
Additional documents about this hose, its compliance and installation. Click to download as PDF in a new tab.
Help with material selection
Even though this hose is not ATEX-relevant, these two articles provide useful background on electrical resistance and industrial safety — important if you later combine the hose with electrical equipment or work in mixed environments:
Industries that use it
The hose is used for oxygen distribution in welding and smelting processes:
Welding, automotive and ceramic industries use the hose as a single-line oxygen hose.
Custom lengths and assemblies
The hose can be cut to length and assembled with couplings, cuffs and threaded fittings through Particulair's custom hose assemblies.
We offer guidance on material choice, coupling system and grounding, so the hose fits correctly into the overall system. If there is any doubt about zone classification or resistance requirements, a short conversation before ordering is well worth the time.
Frequently asked questions
What is the difference between SALDAFORM® (twin) and SALDAFORM®/BLUE (single)?
The twin variant combines oxygen and acetylene in one bonded construction — practical for handheld welding equipment. The single variant BLUE is exclusively oxygen-specific. Choose twin when you need both gases parallel; choose single if you have separate hoses for each gas, or work from one central tank.
Can the hose be supplied cut to length with couplings?
Yes. SALDAFORM®/BLUE can be cut to length and assembled with couplings, cuffs and threaded fittings through Particulair's custom hose assemblies. We provide guidance on coupling system and sealing so the hose fits correctly into the overall installation.
How do I order the hose, and where do you deliver?
The hose is ordered through Particulair (Karlslunde, Denmark). We deliver to Denmark, the EU and selected third countries such as Norway and Switzerland. Standard dimensions can typically be delivered in 1-2 weeks; custom assemblies and larger volumes require slightly longer lead time.
What is the hose's expected service life?
Service life depends on operating conditions: loading, temperature, chemical exposure, UV and mechanical movement. In standard industrial use, expected life is 3-7 years. Aggressive conditions (high temperatures, continuous flexing, chemical vapours) reduce service life. We recommend regular visual inspection for cracks, deformation or discolouration.
How is the hose best stored before use?
Store the hose dry, at room temperature (15-25 °C) and out of direct sunlight. Avoid contact with ozone-generating equipment (welding equipment, engines). If stored on a reel, the bend must be larger than the specified minimum radius to avoid permanent deformation. Proper storage significantly extends shelf life.
What is the minimum bend radius, and what happens if I go below it?
Minimum bend radius is the smallest radius the hose can be bent to without permanent deformation or internal damage. The table above shows specific values for each dimension. Bending the hose below this limit can collapse the wall, kink the spiral or damage the inner coating. The result is reduced flow, increased pressure loss and shorter service life. Always use bend radius as a design constraint in installation.
Which chemicals is the hose resistant to?
Specific chemical resistance depends on material selection, concentration and temperature. The manufacturer maintains an extensive chemical resistance table showing compatibility for hundreds of chemicals. It can be downloaded from the Documentation section above. If in doubt about a specific chemical or mixture, contact Particulair — we can advise based on your concrete process.
Does temperature affect the hose's chemical resistance?
Yes, significantly. Higher temperatures accelerate chemical attack and reduce the material's resistance. A hose fully compatible with a chemical at 20 °C may be underrated at 60 °C. The manufacturer's chemical resistance table typically lists values at 20 °C; at higher operating temperatures, compatibility must be reassessed. We always recommend a consultation before choosing a hose for chemical transport at elevated temperatures.