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About OPK Fitting

OPK FITTING Hydraulic Equipment Factory is China Hydraulic Hose Ferrules Factory and Hydraulic Hose Sleeves Suppliers. 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

  • Industry News 2026-09-03

    여러분의 손은 이미 그 차이를 알고 있습니다. JIC 수형 피팅은 JIC 암형 스위블과 금속 간 37° 플레어가 있는 시트에 부드럽게 나사산이 끼워져 있습니다. 동일한 수컷을 NPT 포트에 연결하면 나사산이 묶이거나 누출되거나 손상됩니다. 이 짧은 테스트는 JIC 유압 피팅이 인기 있고 오해받는 이유를 포착합니다. JIC는 공동 산업 협의회(Joint Industry Council)를 의미하며 형상은 SAE J514에 정의되어 있습니다. 평행 UNF 나사산과 37° 플레어 밀봉 표면. 유압 호스를 주문하거나 조립할 때 나...

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  • Industry News 2026-08-26

    새로 배달된 호스 조립품이 펌프 포트에 3번 회전한 후 결합된다고 가정해 보십시오. 조금 더 힘을 가하면 연결이 제대로 보이지만 시스템이 작동 압력에 도달하자마자 누출이 발생합니다. 현장 서비스에서 일치하지 않는 유압 피팅 스레드는 결함이 있는 호스보다 훨씬 더 자주 누출, 포트 벗겨짐 및 생산 시간 손실을 유발합니다. 스레드 계열과 이를 식별하는 방법을 이해하면 이러한 문제가 시작되기 전에 대부분의 문제를 해결할 수 있습니다. 유압 피팅 스레드가 중요한 이유 유압 피팅의 나사산은 부품을 함께 고...

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  • Industry News 2026-08-20

    A hydraulic hose bursts on an excavator arm at mid-morning. The spare fitting in the toolbox looks exactly like the damaged one, but it will not thread on. Identifying hydraulic fittings correctly is what separates a 20-minute repair from a half-day hunt for the right adapter. Most hydra...

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Ferrules

1、What Are Ferrules and Why Are They Important?

Ferrules are essential components used to secure and reinforce hose assemblies, ensuring a tight and leak-free connection between hoses and fittings. They are widely used in hydraulic systems, construction machinery, and industrial fluid transfer applications. A properly crimped ferrule can increase connection strength by up to 40% , significantly improving system reliability.

Ferrules help prevent hose blow-off and leakage under high pressure, making them a critical safety component in hydraulic systems that often operate above 3,000 PSI .

2、What Are the Key Features of High-Quality Ferrules?

(1)Material Options

Ferrules are commonly made from carbon steel and stainless steel . Carbon steel is suitable for general applications, while stainless steel offers superior corrosion resistance, especially in marine or chemical environments.

(2)Surface Treatment

Standard plating includes trivalent zinc (Cr3) , available in silver and yellow finishes. This eco-friendly coating enhances corrosion resistance without harmful chromium.

(3)Corrosion Resistance

Our ferrules pass salt spray tests exceeding 72 hours , and can reach up to 200 hours upon request, ensuring durability in harsh environments.

(4)Packaging

Each ferrule is protected with plastic caps and packed in carbon cartons to prevent damage during transportation and storage.

3、How to Select the Right Ferrules?

(1)Selection Criteria

  • Hose Compatibility – Must match hose outer diameter and structure
  • Pressure Requirements – Ensure secure crimping under working pressure
  • Environmental Conditions – Corrosion, temperature, and humidity factors
  • Material Strength – Choose stainless steel for high-corrosion environments

(2)Comparison Table

Ferrule Material and Performance Comparison
Material Corrosion Resistance Application
Carbon Steel Moderate General hydraulic systems
Stainless Steel High Marine, chemical industries

4、Why Choose OEM Ferrule Manufacturing?

(1)OEM Customization

OEM services allow customers to provide drawings or samples for custom production. This ensures high compatibility and can reduce assembly errors by up to 30% .

(2)Sample Availability

Free samples are available, allowing customers to verify quality, dimensions, and performance before placing bulk orders.

(3)Company Introduction

OPK FITTING Hydraulic Equipment Factory is a specialized domestic factory with hydraulic pipes and adaptors production experience. 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.

5、Frequently Asked Questions (FAQs)

Q1: How do ferrules improve hose safety?

Ferrules reinforce the hose connection, preventing leaks and blow-offs under high pressure, especially above 3,000 PSI .

Q2: What is the typical lifespan of ferrules?

With proper material and maintenance, ferrules can last 3–5 years or longer in industrial applications.

Q3: How can I choose the right ferrule size?

Select ferrules based on hose outer diameter and ensure proper crimping specifications to achieve a secure fit.