YUYAO DUOLI HYDRAULIC CO., LTD.
YUYAO DUOLI HYDRAULIC CO., LTD.

Hydraulic Hose Fittings

When performance, compatibility, and value matter most, Duoli Hydraulic Fittings deliver. Designed to integrate seamlessly with Duoli’s world-class hoses and rigorously tested with other leading global brands, our high pressure hose fittings provide unmatched reliability, strength, and versatility — without the premium price.

Types of Hydraulic Fittings

45° SAE FLANGE 6000 PSI CODE 62 ISO12151-3/SAE J516-J518

The 45° SAE Flange complies with Code 62 ISO12151-3/SAE J516-J518 standards, supporting 6000 PSI. Its precision-machined 45° design enables flexible, leak-free, and secure connections in high-pressure hydraulic systems for industrial and mobile applications.

METRIC FEMALE MULTI SEAL

The Metric Female Multi Seal is a versatile hydraulic fitting that meets metric standards, providing reliable sealing across a wide range of applications. Its advanced sealing technology ensures a leak-resistant, secure connection in both low and high-pressure systems, offering robust performance and global compatibility.

METRIC FEMALE 24° MULTI SEAL L.T. ISO 12151-2-DIN 3865

The Metric Female 24° Multi Seal L.T. fitting meets ISO 12151-2/DIN 3865 standards. Designed for high-pressure hydraulic systems, its precision 24° cone and advanced sealing technology ensure a secure, leak-resistant connection in demanding industrial applications.

METRIC FEMALE 24° MULTI SEAL H.T. ISO 12151-2-DIN3865

The Metric Female 24° Multi Seal H.T. fitting (ISO 12151-2, DIN 3865) is engineered for high-pressure hydraulic systems. Its precision 24° cone design ensures a secure, leak-resistant connection, offering exceptional sealing performance in demanding industrial applications.

METRIC MALE 24° CONE SEAT L.T. ISO 8434-1-DIN3861

The Metric Male 24° Cone Seat L.T. fitting conforms to ISO 8434-1 and DIN 3861 standards. Engineered for reliable sealing, it features a long-thread design for secure, leak-resistant hydraulic connections in demanding industrial and automotive applications worldwide.

Duoli Hydraulic Fittings - Precision Engineered & Market Proven.

Engineered for All Applications

Duoli fittings offer a complete solution for every hose type — from braided to spiral, low pressure to ultra-high pressure. Whether you're outfitting OEM equipment or performing field replacements, our custom hydraulic fittings ensure precision-fit performance across all your needs.

Non-Skive Convenience

Forget messy, time-consuming prep. Our Non-Skive Design of the hydraulic tube fittings eliminates the need to remove hose covers, speeding up installation while preserving hose integrity.

Tested to Outlast

Our industrial hydraulic fittings surpasses 400,000 impulse cycles for braided hoses

Achieves up to 1.2 million cycles for spiral hoses

This level of endurance not only rivals but often exceeds leading competitors — delivering proven durability where it matters most.

Flexible Options

Duoli hydraulic fittings for sale are available in both two-piece and one-piece configurations, providing adaptable solutions for diverse application needs while ensuring secure connections and efficient hose assembly.

Duoli Corrosion-Resistant Plating Technology of Hydraulic Adapter Fittings

Duoli stainless hydraulic fittings are engineered with advanced anti-corrosion plating systems to significantly extend service life in harsh environments. Our zinc-nickel plating delivers corrosion resistance up to 11 times greater than the SAE J516 standard, which requires only 144 hours of salt spray resistance. Even our standard zinc-coated fittings perform 3 times above industry norms.


Just as hydraulic hoses rely on robust outer covers to shield their internal reinforcements, steel hydraulic tubing fittings require high-performance surface treatments to prevent environmental degradation. Without proper plating, oxidation leads to red rust, which can:


√ Contaminate entire hydraulic fluid systems

√ Degrade fitting integrity and critical sealing surfaces

√ Cause leakage or premature failure

√ Complicate routine maintenance and disassembly

Why Choose Duoli Hydraulic Fittings?

Why Choose Duoli Hydraulic Fittings?

√ Complete Range – Fully compatible with all hose types

√ Non-Skive Design – Clean, quick, and safe installation

√ Superior Life Cycle Testing – Rated for up to 1.2 million impulse cycles

√ One-Piece & Two-Piece Configurations – Flexible solutions for every assembly need

√ Cross-Brand Compatibility – Independently validated to outperform competitors

√ Patent-Pending Design – Engineered to deliver a measurable performance edge

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