Standards of hydraulic hose fittings
Compressed air hose is suitable for high pressure and oil resistant working environment, which is mostly used in industry, construction, agriculture and other fields. The soft wall air compressed hose has the characteristics of appearance, softness, oxidation resistance, anti-aging, no soft in summer, no hard in winter and no cracking.
Compressed air hose is a kind of chemical products with appearance, softness, impermeability, heat resistance, durability, oxidation resistance, aging resistance and irritation resistance. When selecting, it should be combined with the level of cleanliness of the clean room and the nature of the conveying gas, and the appropriate air hose should be reasonably selected.
The hose is commonly used for conveying compressed air, auto parts stores and pneumatic (pneumatic) tools, as well as water and non-corrosive liquids. It is suitable for high pressure and oil resistant working environment, mostly used in industry, construction, agriculture and other fields.
The soft wall air compression tube has the characteristics of appearance, softness, oxidation resistance, anti-aging, no soft in summer, no hard in winter and no cracking.
High temperature and oil resistant braided steel wire air hose has the characteristics of durability, long service life and high safety level. Material for rubber products, using seamless pipe, with wear-resistant, oxidation, fire resistance characteristics. The outer layer has a high tension braided steel wire layer, with friction resistance. The inner layer is black rubber extrusion, the inner surface is smooth, wear resistance, oil mist resistance, adsorption, desorption gas effect, has good corrosion resistance.
Points to note in the process of use:
1. Compressed air hose is divided into low pressure and medium pressure two kinds according to the pressure, the two kinds of pipe can not be mixed, so as to avoid failure. The new hose should be numbered and stacked up separately, and should not be taken wrong when installing.
2. Compressed air pipelines are generally smaller in diameter. The layout of compressed air pipeline network in the factory should try to make use of buildings, corridors and large pipelines to weld the support of compressed air pipelines on them to minimize the number of floor-to-ground supports. Pipeline specifications are many, there is no reasonable configuration of appropriate pipe diameter at all levels according to the needs of the pipeline, the main pipe diameter is too small, other branches arbitrarily enlarged or reduced, many end filters. These increase the pressure of the system, there will be mixed flow at the junction, resulting in a large pressure loss, affecting the service life of the pipeline, is also very important to the stability of the gas.
3. Compressed air hose support force should use the corresponding software calculation, under the condition of stress allows, support form as far as possible the adoption limit support, allows the pipeline with axial displacement under the condition of straight pipe is not long, so don’t set a fixed bracket and compensator, simplifying the pipeline form, reduce the cost of pipeline, also is advantageous to the site construction.
4. Compared with water, gas is more leaky and permeable. Therefore, all interfaces must be air-tight. Select the appropriate gasket, the welding joint should be cleaned of iron oxide welding, after tightening the flange bolts should leave room for further tightening. The flange made shall not have any defects such as opening, deviation, wrong mouth, slack force, uneven gap, etc.
In the pressure test, carefully check the tightness of each interface, do not allow the leakage of trace gas.
Enterprises can choose suitable compressed air hose according to their own situation. Choosing the right hose will help to improve production efficiency, ensure the stability of operations and reduce costs.
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