Rubber Hose Non-Flammability Tester
Category：Flammability Tester
Introduction
The Rubber Hose Non-Flammability Tester is developed in accordance with GB/T 2550-2007 Appendix A and with reference to ISO 3821:1998.
Under specified test conditions, the rubber hose sample is exposed to an oxygen-enriched environment and maintained at a temperature of 360 ℃–365 ℃ for a defined period. The combustion behavior of the hose is observed to evaluate the non-flammability performance of rubber hoses used for welding and cutting equipment.
The instrument provides a reliable and standardized method for assessing fire safety performance of rubber hoses used in gas welding, cutting, and similar industrial operations.
Applications
The Rubber Hose Non-Flammability Tester is widely used in the following application scenarios, covering specific tested products:
(1) Gas Welding Equipment
Oxygen hoses for gas welding
Acetylene rubber hoses
Propane and LPG welding hoses
(2) Gas Cutting Equipment
Oxygen supply hoses
Fuel gas hoses for cutting torches
(3) Industrial Rubber Hose Manufacturing
Quality control of welding rubber hoses
Type testing of fire-resistant hose products
(4) Safety Inspection and Certification Bodies
Fire safety compliance testing
Product certification and conformity assessment
(5) Research Institutes and Laboratories
Fire behavior research of rubber materials
Performance evaluation of hose materials under oxygen-rich conditions
Standards
(1) GB/T 2550-2007
Gas Welding Equipment — Rubber Hoses for Gas Welding, Cutting and Allied Processes
(2) ISO 3821:1998
Gas Welding Equipment — Rubber Hoses for Welding, Cutting and Allied Processes
(3) EN ISO 3821
Gas Welding Equipment — Rubber Hoses (European adoption of ISO 3821)
(4) BS EN ISO 3821
Rubber Hoses for Welding, Cutting and Allied Processes
(5) DIN EN ISO 3821
Rubber Hoses for Gas Welding and Cutting Applications
Technical Parameters
| Parameter | Specification |
|---|---|
| Tungsten Wire Diameter | 0.7 mm |
| Tungsten Wire Length | 20 ± 0.5 mm (tapered tip) |
| Oxygen Flowmeter Range | 0 – 5 L/min (at atmospheric pressure, 15 ℃) |
| Oxygen Flow Control Accuracy | 2 L/min ± 0.1 L/min |
| Thermometer Range | Up to 400 ℃ |
| Thermometer Graduation | ≤ 5 ℃ |
| Electric Furnace Power | 350 W |
| Furnace Inner Depth | 150 mm |
| Furnace Inner Diameter | 50 mm |
| Power Supply | AC 220 V, 50 Hz |
| Total Power | 500 W |
Features
(1) Stainless steel test chamber with excellent corrosion resistance and long service life.
(2) Borosilicate glass tube manufactured strictly according to standard requirements, equipped with oxygen inlet, oxygen outlet, thermometer port, and specimen holder.
(3) Integrated oxygen flowmeter for precise adjustment of oxygen flow.
(4) Imported needle valve ensures accurate oxygen flow control at 2 L/min ±0.1 L/min.
(5) Mercury-in-glass thermometer filled with nitrogen, with a wide measuring range up to 400 ℃.
(6) Continuously adjustable autotransformer allows precise control of electric furnace temperature.
(7) Supplied with aluminum foil for standard-compliant testing procedures.
FAQ
(1) What is this product?
The Rubber Hose Non-Flammability Tester is a laboratory instrument designed to evaluate the fire resistance and non-flammability characteristics of rubber hoses used in gas welding and cutting equipment.
(2) What is this product used for?
It is used to determine whether rubber hoses can maintain safe combustion behavior when exposed to high temperature and oxygen-rich conditions as specified by international standards.
(3) Why is this product important?
Rubber hoses used in welding and cutting are exposed to high temperatures and oxygen. Non-flammable performance is critical to prevent fire hazards, explosions, and workplace accidents.
(4) What products can be tested with this instrument?
Oxygen hoses, acetylene hoses, LPG hoses, propane hoses, and other rubber hoses used in gas welding, cutting, and similar industrial operations.
(5) What types of rubber hoses are applicable?
Standard rubber welding hoses, reinforced rubber hoses, and fire-resistant rubber hose products that comply with GB/T 2550 and ISO 3821 requirements.
(6) How is the test performed?
The hose sample is placed in a borosilicate glass tube, oxygen is introduced at a controlled flow rate, and the sample is exposed to a controlled temperature environment. The combustion behavior is observed to determine non-flammability performance.
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