I. Product Overview
High-pressure steel wire spiral hoses are high-strength, high-pressure-resistant, and fatigue-resistant hydraulic transmission pipeline products. They are primarily used for medium delivery under high-pressure, high-frequency, and complex working conditions in the hydraulic systems of various mechanical equipment. The products are strictly manufactured in accordance with the national standard GB/T3683 and are compatible with international mainstream standards such as ISO1436, DIN20022, and SAE100R1AT/R2AT. They meet the supporting equipment needs of domestic and overseas engineering machinery. These hoses are suitable for conventional hydraulic fluids such as petroleum-based media and water-based emulsions, but are not applicable to special media like castor oil and naphthenic esters.
II. Main Application Scenarios
High-pressure steel wire spiral hoses are widely used in mining hydraulic supports, oilfield extraction equipment, construction machinery, lifting and transport equipment, metallurgical forging equipment, marine supporting equipment, injection molding machines, agricultural machinery, various machine tools, and automated hydraulic systems. They are mainly used to convey pressure media such as mineral oil, hydraulic oil, fuel oil, lubricating oil, and water-oil emulsions under high-pressure and high-temperature conditions, serving as core supporting components for industrial hydraulic systems.
III. Product Structure
The hose adopts a multi-layer composite structure, consisting of a fluid-resistant inner tube, an intermediate rubber layer, a multi-layer steel wire spiral reinforcement layer, and a weather-resistant outer cover:
Inner Tube: Made of high-quality oil-resistant nitrile rubber, it features high density and excellent sealing properties. It effectively isolates the conveyed medium, prevents the corrosion of the steel wire layer, and ensures uniform pressure bearing of the pipeline.
Steel Wire Reinforcement Layer: Adopting a multi-layer spiral structure of high-strength steel wire (2, 4, or 6 layers), it serves as the core skeleton of the product, significantly enhancing pressure resistance, pulse resistance, and structural stability.
Intermediate Rubber Layer: It ensures tight bonding between the steel wire layer and the inner/outer rubber layers, resulting in a solid overall structure with uniform stress distribution and minimal deformation under pressure.
Outer Cover: Made of high-density, weather-resistant special rubber, it exhibits excellent wear resistance, aging resistance, acid and alkali resistance, and mechanical impact resistance, making it adaptable to harsh environments such as outdoor exposure, mining, and construction sites.
IV. Core Product Features
Excellent Fluid Resistance: The inner layer utilizes a specialized oil-resistant rubber formulation that is resistant to oil, high temperatures, and aging. It is not prone to swelling or aging during long-term delivery of hydraulic oil, fuel, or emulsions, ensuring a longer service life.
Ultra-High Pressure Bearing & Strong Pulse Resistance: The steel wire spiral skeleton structure offers high load-bearing capacity and high pressure ratings. It can withstand high-frequency pulse pressure impacts from equipment, minimizing the risk of pipe bursting or layer delamination.
Tight Structure & Low Deformation Rate: The layers are tightly bonded, and the hose body has moderate flexibility. It exhibits minimal expansion and high dimensional stability under high-pressure working conditions, ensuring safer pipeline operation.
Excellent Fatigue & Bending Resistance: The overall structure boasts high tensile and compressive strength. It is resistant to cracking under repeated bending and dynamic operations, making it perfectly suited for mechanical working conditions with frequent movements.
Significant Length Advantage: Large-diameter specifications can be customized to an ultra-long single length of 20 meters, while small-diameter specifications can be provided in 10-meter or 100-meter continuous lengths. This reduces the number of joints and leakage risks, meeting the whole-pipe laying requirements of large-scale equipment.
V. Working Condition Adaptability Advantages
This series of hoses features strong overall stability and high durability. It can reliably handle complex and harsh conditions such as high pressure, heavy loads, high-frequency start-stop cycles, outdoor sun exposure, and dust abrasion. Relying on its stable pressure-bearing performance and long service life, it has become the preferred supporting product for high-pressure hydraulic systems in industries such as construction machinery, mining, oilfields, and metallurgy.