High-pressure hydraulic hoses and low-pressure hydraulic hoses are two types of pipes used in hydraulic systems with different pressure ratings. They differ in pressure range, material selection, and structural design.
- Pressure Range: High-pressure hydraulic hoses are typically used in hydraulic systems that withstand higher pressures, ranging from hundreds to thousands of bar (MPa) or even higher. Low-pressure hydraulic hoses are used in hydraulic systems that withstand lower pressures, generally between tens and hundreds of bar (MPa).
- Material Selection: Because high-pressure hydraulic hoses need to withstand higher pressures, they typically use high-strength, pressure-resistant materials, such as steel wire reinforcement layers and pressure-resistant rubber. Low-pressure hydraulic hoses, due to their lower pressure requirements, typically use flexible tubing materials with better elasticity, such as polyurethane or polyester elastomers.
- Structural Design: High-pressure hydraulic hoses usually employ a multi-layered structure, including an inner rubber layer, a reinforcement layer (steel wire layer), and an outer rubber layer. The inner rubber layer provides excellent sealing and corrosion resistance, the steel wire layer enhances the pipe’s pressure resistance, and the outer rubber layer offers wear resistance and weather resistance. Low-pressure hydraulic hoses have a relatively simple structure, typically consisting of only one layer of rubber or plastic material.
- Application Scenarios: High-pressure hydraulic hoses are commonly used in engineering machinery, metallurgical equipment, and oil drilling, where they need to withstand high pressures. Low-pressure hydraulic hoses are typically used in automobiles, ships, and agricultural machinery, where pressure requirements are relatively lower.
In summary, the main differences between high-pressure and low-pressure hydraulic hoses lie in their operating pressure range, material selection, and structural design. When selecting hydraulic hoses, it is necessary to determine the appropriate pipe type based on specific operating pressure requirements and application scenarios to ensure the normal operation and safety of the hydraulic system.