Twin Welding Hose (ISO 3821)
Two bonded hose lines carrying oxygen and acetylene simultaneously for welding work.
Product Overview
Twin welding hose consists of two bonded hose lines, each carrying one of the welding gases (acetylene and oxygen). The inner tube is made of synthetic rubber with a high ignition temperature, the reinforcement is high-tensile textile, and the cover is colour-coded to the standard (red for acetylene, blue for oxygen). Built to ISO 3821, it is suitable for workshops, shipbuilding and the construction industry.
Applications
- Gas welding in industrial workshops
- Shipbuilding and the construction industry
- Twin oxygen/acetylene lines and other twin-line applications
End-User Industries
Technical Specification
| Reference standard | ISO 3821 |
|---|---|
| Inner tube | Synthetic rubber with a high ignition temperature |
| Reinforcement | High-tensile textile fibre |
| Cover | Rubber resistant to ozone and weathering; red = acetylene, blue = oxygen |
| Temperature range | ℃20- to ℃80+ |
| Size (inch) | DN (mm) | WP working pressure (bar) | BP burst pressure (bar) |
|---|---|---|---|
| 3/16+3/16 | 5.0+5.0 | 20 | 60 |
| 1/4+1/4 | 6.3+6.3 | 20 | 60 |
| 1/4+5/16 | 6.3+8.0 | 20 | 60 |
| 1/4+3/8 | 6.3+9.5 | 20 | 60 |
| 5/16+5/16 | 8.0+8.0 | 20 | 60 |
| 5/16+3/8 | 8.0+9.5 | 20 | 60 |
| 3/8+3/8 | 9.5+9.5 | 20 | 60 |
| 3/8+3/8 | 10.0+10.0 | 20 | 60 |
In plain terms: This is in effect two hoses — one for oxygen, one for fuel gas — bonded together so they cannot tangle in the workshop or on a welding site. The two lines are different colours under the international standard (usually green for oxygen and red for fuel gas) so that they cannot be connected the wrong way round.
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Technical Catalogue
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