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Twin Welding Hose – R/T Grade, ENISO 3821, for Oxygen & Fuel Gas
Size Range: 1/4" / 5/16" / 3/8" | Working Pressure: 300 PSI (20 bar) | Temperature Range: -30°C to +90°C (-22°F to +194°F)
The Twin Welding Hose is a high-quality, flexible dual-line hose designed for safe and reliable oxygen and fuel gas delivery in welding, cutting, and related processes. It features separate color-coded lines – one for oxygen (Green/Blue) and one for fuel gas (Red) – to prevent cross-connection and ensure workplace safety.
This hose is widely used in industrial welding, construction sites, shipbuilding, and metal fabrication where performance, safety, and durability are required.
Key Features
Durable Inner Tube: SBR synthetic rubber provides excellent resistance to oxygen and fuel gas, ensuring safe and stable gas transmission.
High-Strength Textile Reinforcement: High-tensile polyester fiber braid delivers flexibility and consistent pressure performance.
Protective Outer Cover: UV-, abrasion-, and weather-resistant EPDM synthetic rubber cover ensures long service life in harsh working conditions.
Wide Temperature Range: Operates reliably from -30°C to +90°C (-22°F to +194°F) for versatile applications.
Grade Options Available: Available in R Grade (acetylene专用) or T Grade (compatible with LPG, propane, natural gas, hydrogen, and other fuel gases).
Industry Standards: Meets ENISO 3821 and RMA IP-7 quality standards for safety and reliability.
Flexible Color Options: Available in Red/Green, Red/Blue, Blue/Orange, or customizable to suit your identification requirements.
Versatile Connector Options: Available with brass fittings in Metric (M16x1.5), British (G3/8-19N), American (G9/16-18N), and Australian (5/8-18N) thread systems.
Applications
Commonly used for:
Oxygen and acetylene welding and cutting
Arc welding with shielding gas
Oxygen and hydrogen/coal gas/carbon gas transmission
Shipbuilding, construction, and metal fabrication
Industrial and workshop gas supply systems
Technical Specifications
| Part No. | Size | I.D. (mm) | O.D. (mm) | Working Pressure | Burst Pressure |
|---|---|---|---|---|---|
| PAA-0650 | 1/4" | 6.3 | 13.0 | 20 bar(300 psi) | 60 bar(900 psi) |
| PAA-1050 | 3/8" | 9.5 | 17.0 | 20 bar(300 psi) | 60 bar(900 psi) |
| PAA-1350 | 1/2" | 12.7 | 21.0 | 20 bar(300 psi) | 60 bar(900 psi) |
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