As a type of rubber hose, the rubber water hose pipe plays an important role in human production and daily life. It is resistant to oil, acids and alkalis, and can withstand high pressure and high temperatures, making it particularly suitable for transporting liquids, especially hot and cold water. From an environmental protection perspective, the rubber water hose pipe does not have a significant impact on human health or the air, making it essentially an eco-friendly, green, and non-toxic product.
Hydraulic Test
Verification Pressure Test: This test checks whether the hose and its components experience any leakage, deformation, or failure when exposed to the verification pressure for 30 to 60 seconds.
Pressure Deformation Test: The hose is held at a specified pressure (working pressure, verification pressure, or any pressure lower than the verification pressure) for 1 minute, and the changes in the hose's length, outer diameter, twist angle, and bend are measured.
Burst Pressure Test: This test determines the pressure at which the hose bursts when subjected to a specified pressure increase rate.
Leakage Test: The hose is subjected to 70% of the minimum burst pressure in static pressure for 5 minutes, repeated once, and checked for any leakage or damage. Since water is typically used in these tests, the measured burst and leakage pressures at ambient temperature may be slightly lower than those experienced with the actual working liquid, due to differences in viscosity.
Low-Temperature Flexibility Test
Low-Temperature Rigidity: The hose is clamped on a twisting wheel with a diameter 12 times the hose's inner diameter. After being exposed to low temperatures for 6 hours, the torque required to rotate it 180° within 12 seconds is measured and compared to the torque measured at standard temperatures.
Low-Temperature Bending: The hose is clamped on a twisting wheel with a diameter 12 times the hose's inner diameter. After being stored at low temperatures for 24 hours, the hose is twisted 180° within 10 seconds, and the inner and outer rubber is checked for brittleness or damage.
Low-Temperature Brittleness Test: A simple test for low-temperature brittleness involves bending the sample 90° at low temperatures or freezing a section of the hose and compressing it by half to check for cracks. Another method involves dropping a weight with a specific mass to impact the sample and observe whether it cracks.
Bending Test
The hose is bent to a certain degree, and the ratio of the minimum outer diameter of the bent portion to the outer diameter before bending is measured. The ability of a steel ball to pass through the hose and the bending force when internal pressure is applied are also tested.
