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About OPK Fitting

OPK FITTING Hydraulic Equipment Factory is China Hydraulic Hose Suppliers and Hydraulic Hose Fittings Manufacturers. We are a professional domestic factory with extensive experience in the production of hydraulic pipes and fittings. Our managing scope relates to various fields such as hydraulic systems etc.; Including all kinds of materials with different pressure levels, flexible hydraulic hoses with various size criteria, hose fitting, adaptor, etc. They have been respectively applied in the hydraulic and fluid conveyance systems of industries, such as machinery, metallurgy petroleum, construction, ships, space-flight, agriculture, pharmaceutical, food, and so forth.
We provide ODM/OEM customization services for a wide range of high-pressure hydraulic fittings and hydraulic oil pipe fittings.
Over 10 years of experience.
A team of skilled design professionals and talent.
Excellent product quality and thoughtful customer service.

Our 10 years of customisation experience has created the OPK Fitting brand value.

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News

  • Types of Hydraulic Fittings with O-Ring: ORFS, BSP and Metric Seal Guide
    Industry News 2026-10-14

    A 250 bar return line on a 12-tonne excavator starts weeping at the pump port. The hose is sound, the clamps are tight, and the leak is at the joint where a straight-thread stud meets the port. In most cases like this, the joint is one of four O-ring fitting families, and the whole repair depends o...

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  • Hydraulic Hose Material Guide: Tube, Reinforcement, Cover and Fitting Choices
    Industry News 2026-10-07

    A maintenance crew replaces a three-quarter-inch hose by matching the part number on the old layline. Same pressure rating, same fittings, same length. Ten weeks later the tube is blistered, the oil has gone dark, and the press is down for two shifts. Nothing about the pressure rating was wrong. Th...

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  • Hydraulic Hose Connections: Types, Sealing, and How to Choose Fittings
    Industry News 2026-09-30

    A hydraulic hose can survive years of service, but the connection is often the weak point. Think about a 3/8-inch JIC male connector that starts to weep because the 74° sealing seat is scored. The maintenance supervisor replaces the hose, only to discover the port on the manifold is ORFS. Two diffe...

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Hydraulic Hose

1、What Is a Hydraulic Hose and Why Is It Important?

A hydraulic hose is a flexible tube designed to transport hydraulic fluid under high pressure within machinery and equipment. It plays a critical role in industries such as construction, agriculture, mining, and manufacturing. Hydraulic systems often operate at pressures ranging from 1,000 to over 5,000 PSI, making hose reliability essential for safety and performance.

These hoses are typically constructed with multiple layers, including an inner tube, reinforcement layers, and an outer protective cover. This design ensures durability, flexibility, and resistance to harsh environmental conditions.

2、What Are the Main Types of Hydraulic Hoses?

（1）Classification by Reinforcement

  • Wire Braided Hoses – Suitable for medium pressure applications
  • Spiral Wire Hoses – Designed for high-pressure systems above 4,000 PSI
  • Textile Reinforced Hoses – Lightweight and flexible

（2）Classification by Application

  • Industrial Hydraulic Hoses
  • Automotive Hydraulic Hoses
  • High-Temperature or Chemical-Resistant Hoses

Choosing the correct type ensures efficiency, safety, and longer service life in demanding environments.

3、How to Choose the Right Hydraulic Hose?

（1）Key Selection Criteria

  • Working Pressure – Should exceed system pressure by at least 25%
  • Temperature Range – Typically -40°C to 120°C
  • Fluid Compatibility – Prevents internal degradation
  • Flexibility and Bend Radius

（2）Comparison Table

Hydraulic Hose Types and Performance Comparison
Hose Type Pressure Range Application
Wire Braided 1,000–3,000 PSI General machinery
Spiral Wire 3,000–6,000 PSI Heavy equipment

4、How to Maintain Hydraulic Hoses for Long-Term Performance?

（1）Regular Inspection

Check for cracks, leaks, or bulging. Research indicates that over 60% of hose failures are due to external damage or improper maintenance.

（2）Correct Installation

Avoid twisting or exceeding the minimum bend radius, as this can reduce hose life by up to 50%.

（3）Company Introduction

Ningbo Force Auto Parts Co., Ltd. specializes in manufacturing high-quality hydraulic hoses, lifting slings, and industrial accessories. With advanced production technology and strict quality control, the company provides durable and reliable solutions to global customers, ensuring safety and efficiency in hydraulic systems.

5、Frequently Asked Questions (FAQs)

Q1: How long does a hydraulic hose typically last?

Most hydraulic hoses last between 3 to 5 years, depending on operating conditions and maintenance.

Q2: How do I know if a hydraulic hose is failing?

Signs include visible cracks, fluid leaks, reduced system pressure, and unusual bulging.

Q3: How can I improve hydraulic hose lifespan?

Follow proper installation guidelines, perform regular inspections, and use hoses rated for your system’s pressure and temperature.