YDFLUID stainless steel DIN hydraulic tube fittings

Your system partner for hydraulic connections

YDFLUID develops and manufactures DIN 24° cone tube fittings, hydraulic adapters and flanges for mobile and stationary applications.

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→
Discuss your application
Construction machinery hydraulic fittings

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 expertise

Zn-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 markets

15+

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

Drawings, samples, part numbers or a short description — by email, form or WhatsApp.

02

Quotation in 12 hours

Our engineers check the specification and return a detailed, itemised quotation.

03

Free sample approval

Samples are produced and shipped for your fit, pressure and corrosion testing.

04

Production & delivery

15–30 days lead time, 100 % inspection, FOB Ningbo — 40 km from our factory.
SAE high pressure flanges by YDFLUID

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.

ISO 9001VDA 6.3SGS verifiedTÜV verifiedNational S&T Enterprise9 patentsRoHS / Cr(VI)-free
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