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

SAE FLANGE 3000 PSI CODE 61 ISO12151-3/SAE J516-J518

The SAE Flange 3000 PSI, compliant with ISO12151-3/SAE J516-J518 standards, is a high-pressure hydraulic fitting. Designed for 3000 PSI applications, the Code 61 designation indicates a robust 4-bolt flange connection, ensuring reliable and leak-resistant performance in demanding hydraulic systems.

90° SAE FLANGE 3000 PSI CODE 61 ISO12151-3/SAE J516-J518

The 90° SAE Flange 3000 PSI (Code 61) is a standardized, high-pressure hydraulic connector compliant with ISO12151-3/SAE J516-J518 specifications. Its universal design ensures seamless compatibility and reliable, leak-proof performance in demanding applications across industrial, aerospace, and automotive hydraulic systems.

45° SAE FLANGE 3000 PSI CODE 61 ISO 12151-3/SAE J516-J518

This 45° SAE Flange is a high-pressure (3,000 PSI, Code 61) hydraulic connector engineered to ISO 12151-3/SAE J516-J518 standards. It delivers durable, reliable performance in industrial and mobile hydraulic systems worldwide.

30° SAE FLANGE 3000 PSI CODE 61 ISO12151-3/SAE J516-J518

Compliant with ISO12151-3/SAE J516-J518, the 30° SAE Flange (3000 PSI) provides a secure, low-stress connection for high-pressure hydraulic systems, ensuring reliability and interchangeability in demanding applications.

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

Compliant with Code 62 ISO12151-3/SAE J516-J518, the SAE Flange 6000 PSI provides a robust, standardized connection for ultra-high-pressure hydraulic systems, ensuring safety and performance in the most demanding environments.

90 ° SAE FLANGE 6000 PSI CODE 62 ISO12151-3/SAE J516-J518

The 90° SAE Flange is a high-pressure hydraulic connector rated for 6000 PSI, conforming to the Code 62 ISO12151-3/SAE J516-J518 standard. Engineered for reliability and leak-free performance, it ensures durability and safety in demanding industrial and mobile hydraulic applications.

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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