Standards of hydraulic hose fittings
Hydraulic hose is an important part of hydraulic system. It’s commonly used in almost all the industries such as chemical and mechanical equipment producing. You may quite familiar with it, especially relevant industry employee. However, most of us only know pieces of it. Thus let me give you a general introduction of hydraulic hose.
Structure
Hydraulic hose has different names such as hydraulic oil hose and high pressure hose. Normally, it has 2 types. One is steel wire braid hose, while another one is steel wire spiral hose. It consists inner tube, middle rubber, cover and reinforcement. While the reinforcement could be 2, 4 or 6 layers of steel wires. Inner tube is to protect the steel wire form corrosion, while cover is to prevent it from damage. While the steel wires are to reinforce.
Mediums and their temperature
Hydraulic hose is to transfer hydraulic to other parts of the system. Besides, it can transfer water, oil and air at a high pressure. As for the temperature, it’s -40-100℃ for oil and -30-50℃ for air. While it’s 0-80℃ for water.
Product standard
General standards of hydraulic hose are DIN, SAE, ISO and GB/T.
Steel wire braid hydraulic hose standards: DIN EN853, SAE J517, GB/T 3683-2011 and ISO 1436
Steel wire spiral hydraulic hose standards: DIN EN 856, SAE J517, GB/T 10544-2003 and ISO 3682
Hydraulic hose features:
1. It adsorbs special synthetic rubber, thus it has excellent oil, aging and heat resistance
2. The hose is close-knit and flexible. Besides, there is small distortion at the pressure
3. Excellent twist and fatigue resistance
4. High pressure resistance and excellent pulse property
Application
It’s suitable for oil exploitation, lifting, metallurgy, machine and automotive systems. And to transfer petrol and water based mediums. While the working pressure can be 60Mpa.
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