There are several differences between 4SP and 4SH steel wire hoses (usually referred to as high-pressure steel wire spiral hoses), and the main differences are as follows:
1. Stress tolerance
4SH: Its pressure tolerance is slightly higher than that of 4SP. This is mainly due to the fact that the outer diameter of the 4SH wire is a little smaller than that of the 4SP, which can withstand higher pressures under the same conditions.
4SP: Although it also has a higher pressure tolerance, it is slightly lower than 4SH.
Second, the scope of application
Both of them are widely used in various fields that require high-pressure and high-flow hydraulic media, such as mine hydraulic supports, oilfield development, engineering construction, lifting and transportation, metallurgical forging, mining equipment, ships, injection molding machinery, agricultural machinery, various machine tools, and mechanized and automated hydraulic systems in various industrial sectors. However, due to the higher pressure resistance of 4SH, it may be more suitable in some scenarios that require higher pressures.
Third, the implementation of standards
Differences in Execution Standards: Hydraulic hoses 4SH and 4SP are both four-ply steel wire wound hoses, but their execution standards may vary depending on product specifications, manufacturers, and areas of application. For specific standards, please consult the product documentation or consult the relevant company.
Selection considerations: When selecting hydraulic hoses, in addition to the implementation of standards, it is also necessary to consider factors such as materials, manufacturing processes and use environments.
4. Materials and structures
Both are composed of an inner and outer rubber layer and a skeleton layer, and the material of the skeleton layer is usually steel wire. The inner and outer rubber layer materials may include natural rubber, styrene-butadiene rubber, neoprene rubber, nitrile rubber, etc., depending on the performance requirements of the hose such as oil resistance, acid and alkali resistance, and high temperature resistance.
The steel wire winding structure makes both hoses have good pressure resistance, wear resistance and corrosion resistance.
5. Working temperature
High-pressure steel wire spiral hoses typically have a wide operating temperature range, but this depends on the hose material and application. Generally speaking, for oily media, the operating temperature can reach -40°C to 100°C; For media such as water emulsions, it is generally below 80°C.
In summary, there are certain differences between 4SP and 4SH steel wire hoses in terms of pressure tolerance, application range, implementation standards, materials and structure, and operating temperature. When choosing, comprehensive consideration should be made according to specific application scenarios and needs.
