| Quantity: | |
|---|---|
 | Type | I.D. | I.D.XO.D. | W.P. | B.P. | B.Radius | Weight | ||
| Dash | inch | mm | Bar | Psi | Bar | mm | Lb/ft | Kg/m | |
| T/R-03 | 3/16" | 5X11.9 | 20 | 300 | 60 | 80 | 0.19 | 0.28 | |
| T/R-04 | 1/4” | 6X13.5 | 20 | 300 | 60 | 90 | 0.23 | 0.34 | |
| T/R-05 | 5/16” | 8X15.5 | 20 | 300 | 60 | 110 | 0.28 | 0.42 | |
| T/R-06 | 3/8” | 10X17.5 | 20 | 300 | 60 | 125 | 0.35 | 0.52 | |
The Durable Twinline Welding Hose is a dual-line hose system designed for the safe and efficient conveyance of gases in welding, cutting, and allied processes. Available in four variants—T/R-03, T/R-04, T/R-05, and T/R-06—it caters to diverse industrial needs with precision. Each model features a 3/16” to 3/8” inner diameter (ID) and 5X11.9 mm to 10X17.5 mm outer dimensions, ensuring compatibility with standard fittings .
Constructed with EPDM/NBR (Grade T) and EPDM/SBR (Grade R) inner tubes, the hose offers exceptional resistance to chemicals, oils, and abrasion . The middle layer of EPDM/NR kneading and single layer of polyester fiber reinforcement provide structural integrity, while the NBR nitrile rubber + CR neoprene cover enhances durability and weather resistance . With a safety factor of 3:1 and a temperature range of -10°C to +80°C, this hose ensures reliable performance in extreme conditions .
The hose’s inner tube materials—EPDM/NBR (Grade T) and EPDM/SBR (Grade R)—are strategically chosen for specific gas compatibility. Grade T excels in handling LPG, natural gas (CNG), and methane (CH₄), while Grade R is optimized for oxygen, acetylene, and inert gases like argon and nitrogen . This dual design minimizes cross-contamination risks and ensures compliance with industry standards.
A single layer of polyester fiber reinforcement runs through both Grade T and R hoses, providing high tensile strength and resistance to pressure fluctuations. This design feature, common in premium welding hoses , ensures the hose remains flexible yet robust, even under continuous use.
The NBR nitrile rubber + CR neoprene cover offers superior protection against abrasion, ozone, and weathering. Its self-extinguishing properties make it ideal for environments with sparks and flames, reducing downtime due to wear and tear .
With a working pressure of 20 bar (300 psi) and a burst pressure of 60 bar, the hose withstands extreme conditions. Its -10°C to +80°C temperature range ensures suitability for both cold and hot environments, making it a versatile choice for global industrial settings .
The hose adheres to ISO 3821 (formerly EN 559) and ARPM IP-7 standards, ensuring compatibility with oxygen and acetylene systems . This compliance is critical for safety and regulatory adherence in sectors like automotive manufacturing and shipbuilding .
The Durable Twinline Welding Hose is a staple in oxy-fuel welding and cutting operations. Grade R variants efficiently transport oxygen and acetylene, while Grade T supports LPG and natural gas applications, ensuring precise control over gas flow .
In manufacturing plants and construction sites, the hose facilitates the safe transfer of argon, nitrogen, and other inert gases for shielding or purging processes. Its chemical resistance makes it suitable for CNG and methane in energy-related applications .
The hose's lightweight design and flexibility make it ideal for vehicle assembly lines and aerospace component manufacturing, where reliable gas supply is critical for welding and brazing operations .
From steel fabrication to tunnel construction, the hose's durability and high-pressure rating ensure seamless performance in heavy-duty environments. Its resistance to abrasion and weathering makes it suitable for outdoor applications .
Q1: What is the safety factor of the hose?
The hose features a 3:1 safety factor, meaning it can withstand three times its working pressure (20 bar) without failure. This exceeds industry standards, ensuring long-term reliability .
Q2: Does the hose comply with regional regulations?
Yes. It meets ISO 3821/EN 559 and ARPM IP-7 standards, ensuring compliance with European and North American safety regulations. For example, it adheres to California’s Title 8 Section 4839, which mandates color-coded gas hoses and regular inspections .
Q3: Can the hose be used in extreme temperatures?
Absolutely. The hose operates efficiently between -10°C and +80°C, making it suitable for both freezing climates and high-heat welding environments .
Q4: How should the hose be maintained?
Regular inspections for leaks, abrasions, or swelling are recommended. Avoid contact with oils and solvents, and store the hose in a cool, dry place. Follow the ISO 3821 guidelines for pressure testing every six months .
| Type | I.D. | I.D.XO.D. | W.P. | B.P. | B.Radius | Weight | ||
| Dash | inch | mm | Bar | Psi | Bar | mm | Lb/ft | Kg/m | |
| T/R-03 | 3/16" | 5X11.9 | 20 | 300 | 60 | 80 | 0.19 | 0.28 | |
| T/R-04 | 1/4” | 6X13.5 | 20 | 300 | 60 | 90 | 0.23 | 0.34 | |
| T/R-05 | 5/16” | 8X15.5 | 20 | 300 | 60 | 110 | 0.28 | 0.42 | |
| T/R-06 | 3/8” | 10X17.5 | 20 | 300 | 60 | 125 | 0.35 | 0.52 | |
The Durable Twinline Welding Hose is a dual-line hose system designed for the safe and efficient conveyance of gases in welding, cutting, and allied processes. Available in four variants—T/R-03, T/R-04, T/R-05, and T/R-06—it caters to diverse industrial needs with precision. Each model features a 3/16” to 3/8” inner diameter (ID) and 5X11.9 mm to 10X17.5 mm outer dimensions, ensuring compatibility with standard fittings .
Constructed with EPDM/NBR (Grade T) and EPDM/SBR (Grade R) inner tubes, the hose offers exceptional resistance to chemicals, oils, and abrasion . The middle layer of EPDM/NR kneading and single layer of polyester fiber reinforcement provide structural integrity, while the NBR nitrile rubber + CR neoprene cover enhances durability and weather resistance . With a safety factor of 3:1 and a temperature range of -10°C to +80°C, this hose ensures reliable performance in extreme conditions .
The hose’s inner tube materials—EPDM/NBR (Grade T) and EPDM/SBR (Grade R)—are strategically chosen for specific gas compatibility. Grade T excels in handling LPG, natural gas (CNG), and methane (CH₄), while Grade R is optimized for oxygen, acetylene, and inert gases like argon and nitrogen . This dual design minimizes cross-contamination risks and ensures compliance with industry standards.
A single layer of polyester fiber reinforcement runs through both Grade T and R hoses, providing high tensile strength and resistance to pressure fluctuations. This design feature, common in premium welding hoses , ensures the hose remains flexible yet robust, even under continuous use.
The NBR nitrile rubber + CR neoprene cover offers superior protection against abrasion, ozone, and weathering. Its self-extinguishing properties make it ideal for environments with sparks and flames, reducing downtime due to wear and tear .
With a working pressure of 20 bar (300 psi) and a burst pressure of 60 bar, the hose withstands extreme conditions. Its -10°C to +80°C temperature range ensures suitability for both cold and hot environments, making it a versatile choice for global industrial settings .
The hose adheres to ISO 3821 (formerly EN 559) and ARPM IP-7 standards, ensuring compatibility with oxygen and acetylene systems . This compliance is critical for safety and regulatory adherence in sectors like automotive manufacturing and shipbuilding .
The Durable Twinline Welding Hose is a staple in oxy-fuel welding and cutting operations. Grade R variants efficiently transport oxygen and acetylene, while Grade T supports LPG and natural gas applications, ensuring precise control over gas flow .
In manufacturing plants and construction sites, the hose facilitates the safe transfer of argon, nitrogen, and other inert gases for shielding or purging processes. Its chemical resistance makes it suitable for CNG and methane in energy-related applications .
The hose's lightweight design and flexibility make it ideal for vehicle assembly lines and aerospace component manufacturing, where reliable gas supply is critical for welding and brazing operations .
From steel fabrication to tunnel construction, the hose's durability and high-pressure rating ensure seamless performance in heavy-duty environments. Its resistance to abrasion and weathering makes it suitable for outdoor applications .
Q1: What is the safety factor of the hose?
The hose features a 3:1 safety factor, meaning it can withstand three times its working pressure (20 bar) without failure. This exceeds industry standards, ensuring long-term reliability .
Q2: Does the hose comply with regional regulations?
Yes. It meets ISO 3821/EN 559 and ARPM IP-7 standards, ensuring compliance with European and North American safety regulations. For example, it adheres to California’s Title 8 Section 4839, which mandates color-coded gas hoses and regular inspections .
Q3: Can the hose be used in extreme temperatures?
Absolutely. The hose operates efficiently between -10°C and +80°C, making it suitable for both freezing climates and high-heat welding environments .
Q4: How should the hose be maintained?
Regular inspections for leaks, abrasions, or swelling are recommended. Avoid contact with oils and solvents, and store the hose in a cool, dry place. Follow the ISO 3821 guidelines for pressure testing every six months .
