70 MPa Resin Hose – Manufactured by Letone

 As a benchmark lightweight component for ultra-high pressure fluid transmission scenarios, the ‌70Mpa resin hose from Letone Hydraulic Technology Co., Ltd.‌ uses high-performance nylon as the base material, paired with a multi-layer composite reinforcement structure. While ensuring the rated working pressure of 70MPa, it also takes into account excellent flexibility and lightweight properties, making it a highly reliable preferred solution for ultra-high pressure hydraulic systems.

 Three-Layer Composite Structure Design

The product adopts a three-layer high-performance composite structure to achieve the perfect balance between strength and lightweight:

• ‌Inner Layer‌: Extruded from food-grade nylon, the inner wall roughness is controlled below Ra0.8μm. The nearly mirror-like smoothness greatly reduces the power loss of fluid transmission, and the energy transmission efficiency is 12%~15% higher than that of traditional rubber hoses under the same working conditions.
• ‌Reinforcement Layer‌: It adopts a composite winding structure of two layers of spiral elastic steel wire + two layers of high-strength synthetic fiber, which fundamentally avoids kinking and deformation of the hose while ensuring the rated pressure-bearing capacity of the ‌70Mpa resin hose‌.
• ‌Outer Layer‌: Made of high-wear-resistant polyurethane elastomer, its wear resistance is 3 times that of ordinary rubber hoses, with outstanding anti-aging and anti-scratch performance, adapting to complex outdoor working environments.
• The working temperature of the full series of products covers -40℃~+120℃, which can stably adapt to extreme working conditions such as extremely cold and high temperature.

Core Specification Parameters

The core performance indicators of the mainstream DN6 specification are as follows:

Adapted Working Conditions and Application Fields

This ‌70Mpa resin hose‌ has been directionally optimized for many types of harsh working conditions, covering the ultra-high pressure transmission needs of the whole industry:

• ✅ ‌Hydraulic Tool Scenario‌: Suitable for the power transmission circuit of heavy-duty tools such as 70MPa hydraulic wrenches and hydraulic jacks, maintaining stable pressure bearing under the working condition of high-frequency reciprocating bending, and its service life far exceeds that of ordinary high-pressure hoses.
• ✅ ‌Oil and Gas Exploitation Scenario‌: As the BOP control pipeline for petroleum equipment, it can operate stably for a long time under the working condition of high corrosion and high impact downhole, ensuring the response speed of the emergency shutdown action.
• ✅ ‌Construction Machinery Scenario‌: Suitable for the ultra-high pressure lubricating oil circuit of large mining equipment and shield machines, it resists wear under the outdoor working condition of much dust and strong vibration, reducing the frequency of pipeline maintenance.
• ✅ ‌Emerging Energy Storage Scenario‌: Suitable for the ultra-high pressure liquid cooling circulation pipeline of energy storage power stations, its low expansion characteristic ensures the pressure response accuracy of the system, and the lightweight property reduces the overall pipeline load.

 Operation and Maintenance Specifications

Standardized operation is required during installation and daily use to ensure the service life of the product:

• The bending radius of the hose shall not be less than 70mm, and a straight section at least 2 times the outer diameter of the hose shall be reserved at the joint connection.
• Avoid twisting the hose during installation, and the axis of the joint shall be placed in the movement plane of the component as far as possible to reduce unnecessary wear.
• The system impact pressure shall not exceed the rated value of 70MPa, and the working pressure shall be appropriately reduced by 40% in the working scenario of frequent bending.