
Your system partner for hydraulic connections
YDFLUID develops and manufactures DIN 24° cone tube fittings, hydraulic adapters and flanges for mobile and stationary applications.
Discover our solutions, precisely tailored to your requirements
Industry solutions
Your challenge is our project. We supply ready-to-install connection solutions for construction, agriculture, marine, energy and industrial hydraulics.
Products
From single DIN, SAE, JIC and BSP fittings to custom adapters — our components impress with tight sealing, long service life and simple assembly.
Passion for precision
For more than 15 years, YDFLUID has been building hydraulic connections that simply stay tight. We pioneered Zn-Ni plating for tube fittings in China — and keep working on the challenges of tomorrow today.
Construction machinery
Excavators, loaders and cranes run at up to 400 bar in dust, vibration and heat. Our DIN 24° cone bite-type fittings and SAE flanges hold tight under pressure peaks — with Zn-Ni plating that stays corrosion-free on site for years.
- DIN fittings→
- SAE high pressure flanges→
- Weld fittings→

YDFLUID product highlights
Every fitting carries 15 years of machining know-how. Thanks to our wide range of standards and sizes, we cover most requirements from stock — or develop a custom part that fits your system perfectly.

DIN Fittings

SAE Adapters

BSPP/BSPT Adapters

ORFS Fittings

JIC Fittings

Weld Fittings

SAE High Pressure Flanges

Hose Fittings

Banjo Fittings

Check Valves
Know-how, technology and a clear set of values
The combination of engineering expertise and uncompromising manufacturing quality makes us the right partner — from the first drawing to series production at 500,000 pieces a month.
Discover our expertiseZn-Ni coating technology
720 h white rust and 1,500 h red rust resistance (ASTM B117). Cr(VI)-free and RoHS compliant — produced in our own plating line since 2018.
DIN standard specialist
Complete DIN 2353 / ISO 8434-1 24° cone range in LL, L and S series. Tube OD 4–42 mm, 100–800 bar.
9 active patents
National Science & Technology Enterprise with continuous R&D in sealing geometry and surface treatment.
Vertically integrated
CNC machining, plating and inspection under one roof — full control from bar stock to boxed part. 500,000 pcs per month.
Certified quality
ISO 9001 management system, VDA 6.3 process audits, SGS and TÜV verified factory. 100 % final inspection.
OEM & custom
Built to your drawings or samples: material, thread, coating, marking and packaging. Free samples for approval.
Supplying the world from Ningbo
Our fittings are installed in machines across Europe, North America, Japan, Korea and South-East Asia. 60 % of our output is exported — shipped FOB Ningbo, just 40 km from the factory.
See our export markets15+
Years of experience
500K
Pieces per month
30+
Export countries
9
Active patents
From inquiry to delivery
A clear, four-step process — with one contact person who speaks your language from the first quotation to the final shipment.
01
Send your requirements
02
Quotation in 12 hours
03
Free sample approval
04
Production & delivery

Become part of the YDFLUID network
We are looking for distributors and OEM partners worldwide. Benefit from factory-direct pricing, stock programmes for fast-moving sizes, technical support and marketing material in your language.
- Factory-direct pricing
- Free samples
- MOQ from 100 pcs
- Private labelling
- Engineering support
- Priority production
Ready to source? Let's talk about your project.
Send us your drawings or part numbers — you get a detailed quotation within 12 hours.