Galvanized Durable Metal Hydraulic Adapter Fittings for Industrial

Huajun (HuaJ), formerly known as Hengshui Huana Hoses founded in 2004, was rebranded in 2014 as Huajun Environmental Protection Technology Co., Ltd. The company is a technology-driven industrial and trade enterprise combining R&D, design, manufacturing, and marketing and sales, with two subsidiaries: Hebei Nikelai Hydraulic Technology and Qingdao Huajun Hydraulic Equipment. 

Huajun Environmental Protection Technology covers 32,600m²‌ with 25,000m²‌ of modern workshops and office space, and employs 120 staff members nowadays, including 30 engineers and technicians. The company specializes in manufacturing precise and consistent hydraulic hose assemblies, hydraulic high-pressure hoses, metal hoses, expansion joints, hydraulic hose fittings, hydraulic adapters and nipples, sealing solutions, PTFE pipes, nylon pipes and low-pressure pipes—delivering reliability and trustworthy performance.

As a provider of complete hydraulic hose assembly solution, HuaJ hoses and fittings serve clients across 32 provinces in China and countries overseas such as Japan, Germany and Malaysia, earning excellent reputation among clients worldwide for the stability and reliability. The company is equipped with six advanced hose production lines and over 200 CNC machines special for hose assemblies and fittings, with annual fitting output reaching over 20,000,000 pieces, high-pressure hose assembly output around 2 million units and metal hose output 300,000 pieces, and annual sales reaching over 50,000,000 RMB.

Huajun holds multiple invention and utility patents, and has earned international certifications for quality, environmental and occupational health management, and CE certification, and has been named a "Famous Brand of China" and one of the "Top Ten National Quality Brands".

HuaJ hose assemblies are engineered for high pressure and temperature resistance, durability in extreme environments, superior flexibility, excellent pulse resistance, minimal deformation under pressure, and extended service life. The overall braided and spiral hoses, fittings and braided and spiral hose assemblies are trusted across diverse industries such as construction machinery, marine, coal, petrochemicals, metallurgy, mining, infrastructure and transportation.

While being technology-driven and quality-oriented, Huajun will continue to provide reliable hose and fitting solutions that power the associated industries and connect the world.

1. Are you a manufacturer or a trading company?

We are a professional manufacturer of hydraulic hose fittings and hose assemblies, with our own brand, production, assembly, and quality control facilities.

2. What products do you supply?

We supply:

Hydraulic hose fittings

Hydraulic hose assemblies

Standard and customized fittings

Adapters and connectors

Products are suitable for medium and high-pressure hydraulic systems.

3. What standards do your hydraulic fittings comply with?

Our products comply with SAE, DIN, ISO, BSP, JIC, NPT, and Metric standards.

Specific standards can be confirmed per product.

4. What types of hydraulic hose fittings do you offer?

Typical fitting types include:

BSP (British Standard Pipe)

JIC (37° Flare)

NPT (National Pipe Thread)

ORFS (O-Ring Face Seal)

Metric fittings (DIN, ISO)

Custom fittings are also available upon request.

5. Do you offer customized hydraulic hose assemblies?

Absolutely. Custom hose assemblies are available based on drawings or specifications, including:

Hose type and size

Length tolerance

Fitting type and angle

Working pressure

Application requirements

OEM and ODM services are available.

6. What materials are available for hose fittings?

Carbon steel (zinc plated), stainless steel, and brass. 

Material selection depends on pressure, fluid type, and working environment.

7. Are hose assemblies pressure tested?

Yes. Hose assemblies can be 100% pressure tested or batch tested according to customer requirements before shipment.

8. What is your MOQ?

MOQ depends on the product and customization level. Please contact us for details.

9. What is the lead time?

Generally, 30-45 days

Lead time may vary depending on order quantity and specifications.

10. How can get a quotation or sample?

Please contact us for further communication means. 

11. How do I choose the right hydraulic hose and fitting?
You should consider:
Working pressure and burst pressure
Hose size and inner diameter
Thread type and connection standard
Fluid type and temperature
Application and environment
If unsure, please contact our technical team for support.
 
12. What industries use hydraulic hose fittings and assemblies?
They are widely used in:
Construction machinery
Agricultural equipment
Mining
Industrial machinery
Oil & gas
Marine applications
 
13. How should hydraulic hose assemblies be stored?
Hose assemblies should be stored in a cool, dry place, away from direct sunlight, ozone, chemicals, and sharp objects to maintain performance and service life.

14. How do you ensure compatibility with customer equipment?
We recommend customers provide:
Thread type and size
Hose specification
Working pressure
Application details
Our technical team will assist in selecting compatible products.