Hydraulic hose are far more important components of machinery, equipment and industries.There are standard hydraulic hoses which are produced depending on SAE R100, EN 853, EN 856 and so on. Their reinforcements are one steel wire reinforcement hydraulic hose, two steel wire reinforcement hydraulic hose, three steel wire layers hydraulic hose, four steel wire layers hydraulic hose and six steel wire layers hydraulic hose(EN853 1SN hydraulic hose ,EN853 2SN hydraulic hose. EN853 4SH hydraulic hose, EN856 4SP hydraulic hose and so on ).
Correct selection of hydraulic hose：
The correct selection of hydraulic hose is related to the normal work of the whole hydraulic system and the procurement cost of enterprises. The selection of hydraulic hose should be considered comprehensively from its pressure, size, working medium, temperature adaptation range, bending radius, and activity space and other factors. 1. We produce in strict accordance with ISO 9000 / EN853/EN856 Certificate
(1) hydraulic hose pressure
Hydraulic hose more pressure, the higher the price. The maximum working pressure of the hose must be determined according to the pressure of the system. When choosing, it is necessary to consider not only to ensure the normal operation of the system, but also to save procurement costs. Because of the impact load in the hydraulic system, the maximum working pressure of the hose is generally greater than the maximum working pressure of the hydraulic system, and the explosion pressure of the hose is generally 3 ~ 4 times of the maximum working pressure.
(2) the size of hydraulic hose
The inner diameter of the hydraulic hose is too small, it will increase the velocity of the medium in the tube, make the system heat more, reduce the efficiency, and will produce too much pressure drop, affecting the performance of the whole system; Excessive inner diameter will increase the procurement cost and affect the normal operation of the system. When the hose is fixed with a pipe clip or the hose is passed through the steel plate, we should pay attention to the outer diameter of the hose.
(3) hydraulic hose working medium
Should be based on the hydraulic medium, choose the material suitable hose. The working medium of construction machinery is hydraulic oil. When choosing the hose, the hose should be compatible with the hydraulic oil used.
(4) temperature range of hydraulic hose
The ambient temperature of the hydraulic hose is too high or too low, which will affect the life and pressure bearing capacity of the hose. Therefore, no matter how the working state of the hose changes, the ambient temperature shall not exceed the temperature limit of the hose. Temperature lower than or higher than the recommended temperature limit range of the hose may reduce the performance of the hose, resulting in damage to the hose, resulting in leakage of the hose. Therefore, when the hose is arranged near the heat source, we must pay attention to taking appropriate heat insulation measures.
(5) Bending radius
When choosing High Pressure Hose, we should pay attention to the bending radius of high pressure hose. When calculating the bending radius, the withholding length of the front joint should be subtracted. If the bending radius of the use part of the hose is less than the bending radius of the hose, the pressure bearing capacity and service life of the hose will be reduced. When the allowable pressure and inner diameter of the hose are the same, the hose with a smaller bending radius should be selected first, so as to ensure that the structural layer is not destroyed.
(6) Activity space
Construction machinery of the hose is more, its activity space is limited, use often contact or friction with hard objects, so depending on the situation in the hose external jacket.
After selecting the hose, you must also choose the corresponding pipe joint. Pipe ends or fittings are usually determined by the equipment interface to which they are connected, and therefore the availability of suitable fittings should be taken into account. For high pressure pipelines, it is advisable to choose permanent withholding type pipe joints.
The reason for choosing us:
2. We actively replace the production equipment in time according to the requirements of the government, so as to ensure the
production of environmental protection and pollution-free quality products
3. All our outgoing products are tested many times to ensure that they meet our customers' requirements
4. We are a group of customers to get satisfactory products and strive to have many years of export experience and professional.
Our main products:
1. API 7K rotary drilling rubber hose, BOP hose, cement hose and mud hose
2. Concrete pump hose
3. EN853/ EN856 1SN/2SN/3SN/4SP/4SH hydraulic rubber hose
4. Fire resistant hose and choke line hose
5. Hammer union（Fig50 Hammer Union,Fig100 Hammer Union, Fig200 Hammer Union, Fig206 Hammer Union, Fig207 Hammer Union, Fig400 Hammer Union, Fig602 Hammer Union, Fig1002 Hammer Union, Fig103 Hammer Union, Fig1502 Hammer Union）, air o unions and mud tank union
6. Mining hose , inflatable hose and inflatable packer