Propane & Argon Welding Hose
Propane & Argon Welding Hose (300 PSI / ISO 3821) is a high-performance gas delivery hose specifically engineered for welding, cutting and allied processes. The product complies with ISO 3821:2019 international standard. Manufactured via extrusion process with a three-layer construction: black NR/NBR inner tube (high ignition temperature safety design) + high-strength polyester synthetic yarn braided reinforcement + orange NR/SBR/EPDM cover (smooth surface).
Product description
Product Title
ISO 3821 Propane & Argon Welding Hose | 300 PSI / 20 bar | Orange Ozone-Resistant Cover | NR/NBR Tube | Polyester Reinforced | Welding & Cutting Gas Hose
Product Overview
This high-performance rubber hose is specifically designed for Propane and Argon gas delivery in welding, cutting and allied processes. Manufactured in strict compliance with ISO 3821:2019 international standard, the hose features extrusion process technology ensuring uniform and dense wall thickness.
The hose features a three-layer composite construction:
- Inner Tube: Black NR/NBR synthetic rubber with high ignition temperature – ensures safe delivery of flammable gases
- Reinforcement: High-strength polyester synthetic yarn braided mesh – provides excellent tensile and impact resistance
- Cover: Orange NR/SBR/EPDM synthetic rubber with smooth surface – offers superior ozone, aging and weather resistance
The orange color coding complies with gas industry safety color conventions – orange represents flammable/fuel gases, enabling quick on-site identification and enhanced safety.
Product Construction
| Layer | Material | Process / Characteristics |
|---|---|---|
| Inner Tube | Black NR/NBR (Natural Rubber/Nitrile Blend) | High ignition temperature design; smooth inner wall for optimal gas flow |
| Reinforcement | High-strength polyester synthetic yarn braiding | Pressure-bearing capacity; tensile and impact resistant |
| Cover | Orange NR/SBR/EPDM blend | Smooth surface; ozone, aging, weather and abrasion resistant |
| Process | Extrusion | Uniform and dense wall thickness; high dimensional accuracy |
Key Features
- ISO 3821 International Standard Certified — Complies with ISO 3821:2019 standard, meeting all technical requirements for rubber hoses for welding, cutting and allied processes
- 300 PSI (20 bar) High Working Pressure — Working pressure up to 300 PSI / 20 bar; burst pressure 900 PSI / 60 bar (3:1 safety factor) – meets industrial heavy-duty demands
- High Ignition Temperature Inner Tube — NR/NBR compound with high ignition temperature design, specifically engineered for safe propane and flammable gas delivery, minimizing fire risks at the source
- Ozone, Aging & Weather Resistant — Orange EPDM-compound cover delivers excellent resistance to ozone, UV and weathering; remains crack-free after prolonged outdoor use, extending service life
- Polyester Reinforcement for Durability — High-strength polyester synthetic yarn braided reinforcement provides excellent tensile, impact and kink resistance; maintains integrity after repeated flexing
- Smooth Surface for Easy Cleaning — Smooth and dense cover surface resists dust and oil adhesion; easy to clean and maintain
- Orange Safety Color Coding — Orange cover complies with gas industry safety color standards; enables quick gas type identification on site, enhancing operational safety
- Wide Temperature Range — Operating temperature -20°C to +70°C (select grades available -30°C to +80°C) – suitable for year-round outdoor operations
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Name | Propane & Argon Welding Hose |
| Standard | ISO 3821:2019 |
| Applicable Gases | Propane, Argon, Butane, LPG, Natural Gas, Methane, etc. |
| Tube Material | Black NR/NBR (High ignition temperature compound) |
| Reinforcement | High-strength polyester synthetic yarn braiding |
| Cover Material | Orange NR/SBR/EPDM (Ozone & aging resistant) |
| Manufacturing Process | Extrusion |
| Working Pressure (W.P.) | 300 PSI / 20 bar |
| Burst Pressure (B.P.) | 900 PSI / 60 bar |
| Safety Factor | 3:1 |
| Operating Temperature | -20°C to +70°C（select grades -30°C to +80°C） |
| Surface Finish | Smooth |
| Standard Color | Orange |
| Optional Colors | Red, Blue, Black |
| Standard Lengths | 20m, 40m, 50m, 100m, 120m |
| Customizable | Diameter, Length, Color, Working Pressure, Fittings |
Typical Parameters by Diameter (Reference):
| ID (inch) | ID (mm) | OD (mm) | W.P. (bar) | W.P. (PSI) | B.P. (bar) |
|---|---|---|---|---|---|
| 3/16" | 4.8 | 12 | 20 | 300 | 60 |
| 1/4" | 6.4 | 13 | 20 | 300 | 60 |
| 5/16" | 7.9 | 15 | 20 | 300 | 60 |
| 3/8" | 9.5 | 17 | 20 | 300 | 60 |
| 1/2" | 12.7 | 21 | 20 | 300 | 60 |
| 5/8" | 15.9 | 26 | 20 | 300 | 60 |
| 3/4" | 19.1 | 29 | 20 | 300 | 60 |
| 1" | 25.4 | 36 | 20 | 300 | 60 |
Main Applications
- Welding & Cutting Operations — Gas delivery for welding torches and cutting torches
- Shipyards — Welding and cutting gas supply for shipbuilding and repair
- Steel Fabrication Plants — Gas delivery for steel welding and cutting processing
- Construction Sites — On-site welding and cutting gas supply
- Machinery Workshops — Welding gas delivery for various metal fabrication
- Automotive Manufacturing & Repair — Body welding and repair cutting gas supply
- LPG/CNG Delivery — Suitable for LPG, MPS gas, Compressed Natural Gas (CNG), etc.
Customization Services
We offer flexible customization services:
- Diameter Customization: Available from 3/16" to 1" and above
- Length Customization: Can be cut or customized to any length (20m–120m)
- Color Customization: Orange (standard), Red, Blue, Black
- Pressure Customization: Different working pressures available upon request
- Temperature Customization: Different temperature ratings available for special conditions
- Fitting Customization: Can be equipped with various quick-connect couplings and fittings
- OEM Services: Branding and label customization accepted
Packaging & Shipping
- Packaging: Coiled or rolled, with stretch film + woven bag protection
- Shipping: Sea freight, air freight, or land transportation available
- Lead Time: 7–15 days for standard sizes; 15–30 days for custom sizes
- Sample Policy: Free samples available (freight collect)
