Twin Welding Hose Structure
Twin hose design: The high-pressure twin welding hose have a dual hose design: two hoses in parallel (usually color-coded, the red is for Acetylene, blue for oxygen)
Reinforcement layer: High-strength fiber braided layer is used to ensure high pressure resistance (20bar) and explosion resistance.
Outer Layer: PVC type: lightweight, oil-resistant, chemical-resistant, suitable for general industrial environments.
Regular Specification
| Parameter | Regular Numerical | Remark |
| Inner Diameter | 1/4” (6mm) 5/16”(8mm) | Larger size (for example 3/8” 1/2”) Suitable for high flow demand) |
| Working Pressure | 20bar（2MPa） | Rubber hose can reach 50bar |
| Bursting Pressure | ≥60bar（安全系数3倍） | Ensure safety in extreme situations |
| Applicable Gas | Oxygen and Acetylene | Material compatibility needs to be confirmed (e.g. acetylene-specific pipes) |
| Working Temperature | -10°C ~ +60°C | Rubber hose can withstand higher/low temperature (-30°C~+100°C) |
Hose Feature
Flexible and Durable: The reinforcement layer remains flexible even under high pressure and resists kinking.
Color-coded:
The dual-color hose makes it easy to identify gas types and reduces operator errors.
Lightweight: The PVC material makes the hose lightweight and easy to handle and move.
Chemical Resistant: Resists corrosion from oils, greases, and chemicals commonly encountered during welding.
Dual-Hose Design: Allows simultaneous delivery of two gases (such as oxygen and acetylene) for improved welding efficiency.
High-Pressure Compatible: Designed for high-flow or industrial-grade welding/cutting.
Safety Certification: Complies with international standards such as ISO, EN.
Popular Application Scenarioes
Typical Applications
Heavy Industrial Welding: High-pressure gas delivery in shipbuilding, steel structure welding, pipeline construction, and other applications.
Automated Equipment: High-pressure gas supply systems for robotic welding cells.
Laboratory/Pneumatic Tools: Applications requiring precise control of high-pressure gas.
Usage and Maintenance Precautions
Overpressure is strictly prohibited: Even if the rated pressure is 20 bar, the recommended operating pressure is ≤ 80% of the rated value.
Avoid Damage: Keep away from sharp objects, sparks, or hot surfaces (PVC hoses will melt in the presence of fire).
Regular Inspection: Check for cracks on the outer layer and the airtightness of the inner layer. Replace any aging hose immediately.
Storage Conditions: Store in a coiled container away from direct sunlight and moisture.
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