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YUYAO DUOLI HYDRAULIC CO., LTD.
YUYAO DUOLI HYDRAULIC CO., LTD.
Hydraulic Hoses and Fittings
Specializing in metric and imperial transition joints, hose connectors, and custom hose assemblies. These hydraulic fittings ensure secure, leak-proof connections across various standards, delivering reliable performance for industrial and mobile machinery fluid systems.
01
Hydraulic Hoses
Flexible, robust hydraulic hoses for efficiently transmitting high-pressure fluid in demanding systems.
ISO 18752 Hydraulic Hose Spiral Wire Hose Braided Wire Hose Medium and Low Pressure Hose Specialized Hydraulic Hoses
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02
Hydraulic Hose Fittings
Precision connectors ensuring secure, leak-proof connections in high-pressure hydraulic systems.
SAE FLANGE 3000 PSI CODE 61 ISO12151-3/SAE J516-J518 90° SAE FLANGE 3000 PSI CODE 61 ISO12151-3/SAE J516-J518 45° SAE FLANGE 3000 PSI CODE 61 ISO 12151-3/SAE J516-J518 30° SAE FLANGE 3000 PSI CODE 61 ISO12151-3/SAE J516-J518 SAE FLANGE 6000 PSI CODE 62 ISO12151-3/SAE J516-J518 90 ° SAE FLANGE 6000 PSI CODE 62 ISO12151-3/SAE J516-J518
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03
Hose Fittings Adapters
Essential components for bridging different thread standards and port configurations seamlessly.
BSP MALE 60°SEAT(BONDED SEAL) STRAIGHT UNION ELBOW UNION UNION TEE BULKHEAD UNION BULKHEAD UNION ELBOW
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Hydraulic Hose and Fitting Applications
Hydraulic hose and fitting assemblies are vital for power transmission in construction, agriculture, and manufacturing. They enable high-pressure fluid transfer in machinery like excavators, tractors, and industrial presses, ensuring reliable operation under demanding conditions.
Railway Air Brake Hose Coupling
Ensuring safe, reliable brake system connectivity for critical railway operations.
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Precision Parts
Custom-engineered components for high-performance hydraulic and pneumatic systems.
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Data Center Liquid Cooling Connector
Enabling efficient, leak-proof coolant flow in high-density server thermal management.
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About Duoli
About Duoli

Yuyao Duoli Hydraulics Co., Ltd. It was established in 2009. is a professional hydraulic fitting manufacturers and factory, specializes in the production of transition joints, hose joints and hose assemblies for Metric, British and American systems. The enterprise covers an area of 15,000 square meters with a 10,000 square meter factory building and currently has 60 employees. The annual production capacity is 10 million pieces, and the annual sales volume is 30 million RMB.

Mission: Provide competitive solutions and products to create maximum value for customers
P-Professional
D-Dignity
S-Service
Experience

16 years of activity

Team

60 skilled professionals

Plant

Covers an area of 15,000

Productivity

Annual output 10,000,000

Seeking durable hydraulic solutions you can rely on?
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Latest News & Blogs
12. Aug 2026
Union Tee Fittings: Flow Branching, Sizing and Installation
A union tee fitting provides a practical way to divide or combine fluid flow while allowing the connected lines to be assembled and serviced more conveniently. Used in hydraulic, pneumatic, instrument...
11. Aug 2026
Hydraulic Male Stud Coupling Guide: Types, Sealing and Installation
A hydraulic male stud coupling provides a compact way to connect hydraulic tubing, hoses, manifolds, and other components through a fixed male-threaded connection. Although the basic design appears si...
10. Aug 2026
SAE J1453 ORFS Fittings: O-Ring Face Seal Design and Leak Prevention
In high-pressure hydraulic systems, connection reliability can be just as important as hose and fitting pressure ratings. SAE J1453 defines a connection approach based on an O-ring face seal that help...
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