The use and maintenance of plastic hose

Hose and hose assemblies as careful management. May be sharp or have friction drag and drop on the surface, also do not kink or crushed, such as shall not put the wheels on the hose.


pressure filling the pressure in the hose products ( Including pulse pressure) Shall not exceed the prescribed design work pressure.


temperature hose products shall be prescribed by the hose manufacturer, or suggest outside the temperature range of temperature, Including the conveying material temperature and ambient temperature) Under use. Conveying material


hose and hose assemblies can only be used for transporting materials in the design rules. If any doubt on its applicability, can ask hose manufacturer. When conveying of potentially dangerous materials, such as toxic, corrosive, explosive, flammable materials, care should be taken so that the due to the impact of leakage overflow down to a minimum. Requirements when not in use do not filling in the hose and hose assemblies are conveying of materials.


environment hose and hose assemblies shall not be in the environment to use outside the design requirements. Have doubts as to its suitability, or need to be used in special or under different conditions, shall consult with the hose manufacturer.


bending radius hose and hose assemblies shall not be in less than the minimum bending radius hose factory rules or suggest use, otherwise it will restrict the conveying material through. Should avoid bent or distorted near the hose coupling, because continuous bending in these areas will make hose enhanced fatigue damage, so that the hose premature damage of ring.


torsion stress hose and hose assemblies are generally not suitable for working under distortions.


tensile stress only in special design, hose and hose assemblies can only be subjected to tensile stress. If you have any doubt, the applicability of the hose can ask hose manufacturer.


vibrations make the hose and hose assemblies, especially near the pipe joint fatigue heat production, leading to premature damage of hose assembly. From hose manufacturer shall find out, as to whether can withstand the vibration design and production of the hose.


end connectors before to install the end pipe joint, should check whether fittings and hose match, installation method is reliable. If there is any doubt, shall be submitted to the hose and pipe fittings factory end queries. Edge of pipe joint should be smooth, tailpiece, ferrule, such as the size of the attachment must be guaranteed, to ensure that can effectively seal when installed correctly. Withhold stress and hoop clamp distance quantity must be controlled, otherwise the pressure and torque is less than or metropolitan assembly prematurely damage. In order to facilitate plug pipe joint into the hose, it is recommended to use water or soap and water, unless the hose specified may transport oil, grease or solvent kind material, otherwise not allowed to use the above substances. When insert the hose pipe joint, be careful not to make the hose distortion. Leakage


after installed the end pipe joint, requirements stipulated in the GB 5563 pairs of hose hose assembly test pressure of hydraulic test, check the tapping shall not leak, pipe fittings and hose shall not slip.


electrical test such as electrical have requirements for hose and hose assemblies, can according to GB 9572 testing on a regular basis. Fixed assembly


used in assembling stationary hose and hose assemblies, whenever possible, should use appropriate card support fixed hoop. Must ensure that under the condition of village or vacuum hose can normal mobile ( The expansion moving) , hose length change and distorted shall not be restricted by clamp installation.


movement part if the hose and hose assemblies as the moving parts or components of the device to use, it shall guarantee the proper length, need not too long, don't make the hose under vibration load movement, clamping, friction, excessive bending or excessive tension or stress. Sign


if it is to be marked on the hoses hose the matters stipulated in the standard or other marks, the requirements do not directly on the hose with paint and ink to mark, and asked to use adhesive marks, lest produce these coatings and printing ink solvent with a rubber hose rubber does not adapt.


maintenance otherwise request, unless the relevant rules, standards, can contract the hose and hose assemblies shall periodically test or inspection, to ensure that suitable for continued use. Special attention should be paid to the hose joint and its nearby, and normal aging performance decline due to hose or due to the use under abnormal conditions, misuse or accident damage phenomenon.

with the following defects of hose, using qualification:
a. Perforation, burst, tear, enhance ozone layer of the leakage, cracking;
b. Local deformation, foaming, under the pressure expansion;
c. The hose on the soft and hard skin.
when it says on the hose marks an end date, even if the hose is not appear the phenomenon of performance degradation, also want to monitor it.

hose repair
general requirements, the hose is broken not to repair. But at the end of hose is damaged, and undamaged hose part long enough, can cut off the hose of the damaged parts, pipe fittings, and reinstall after installation shall be carried out to the hose assembly to test. As long as possible to repair, such as the oil industry with large diameter hose, economic benefit was considerable. After the repair must strictly adhere to the hose factory technical indicators, to take a test. If necessary, should also be included in the hose test hose performance experiment was carried out under pressure.