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A quality control technician at Delphi Fittings using precision calipers to verify the critical dimensions of a hydraulic adapter.

Quality Isn't a Slogan. It's Our 5-Step Factory Process.

Any supplier can talk about quality. We prove it on the factory floor. Here’s a straight-up look at how we build hydraulic fittings that don't fail.

Our Philosophy: Control the Process, Control the Part.

At our factory, quality isn't a final inspection - it's the first thing we think about. We know the fittings we make are going into your critical systems, and a single failure can cost you a fortune in downtime, repairs, and reputation. We take that responsibility seriously. That's why our entire manufacturing process, from checking the raw steel that comes in the door to the final count in the shipping box, is built around one principle: owning every step.

We machine everything to the letter of the international standards - SAE, DIN, BSP, JIC. You can be damn sure that when you order a part, it will fit and perform exactly as it's supposed to. That's not a promise; it's a guarantee backed by a process you can see for yourself.

The Paperwork to Back It Up

We are an ISO 9001:2015 certified factory. For us, that's the starting line, not the finish line. This certificate is the third-party proof that we have a serious, repeatable quality management system in place. It tells you we don't just wing it; we have documented processes for everything we do, a commitment to getting better, and a focus on making sure the part you get is the part you ordered.

When you're vetting a new supplier, this is the first thing you should ask for. It’s the baseline proof that you're dealing with a professional operation, not a fly-by-night outfit.

View Our Certificate
A flowchart showing our 5-step factory quality control system for manufacturing reliable hydraulic fittings.

Our 5-Step Quality Gauntlet

Every single fitting we make goes through this process. No exceptions. It’s how we find and fix problems before they ever get near your loading dock.

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    Step 1: Raw Material Inspection

    We don't trust our steel suppliers' paperwork. Every batch of raw bar stock that comes in gets hit with our Spectrometer to verify its chemical makeup. If the steel isn't right, it doesn't even make it onto the rack.

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    Step 2: In-Process CNC Checks

    Our operators are constantly checking parts as they come off the CNCs. We use profilometers, digital calipers, and thread gauges right at the machine to make sure every dimension, thread, and surface finish is dead-on spec.

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    Step 3: In-House Plating Control

    This is a big one. We run our own zinc-plating line. We control the chemistry and the process to ensure a tough, consistent coating. We then test the parts in our Salt Spray Chamber to make sure they'll stand up to rust.

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    Step 4: Final Inspection

    Finished parts get a final, rigorous shakedown. This includes 100% visual checks for any defects, thread gauge verification, and hardness testing. Nothing gets boxed until it passes.

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    Step 5: Shipment & Packaging QC

    The last step is to make sure the right parts get in the right box. We double-check every order for accuracy and inspect the packaging to ensure your fittings arrive in perfect shape, not rattling around loose.

Advanced Testing Equipment for Precision Assurance

To support our rigorous quality control processes, Delphi Fittings invests in a comprehensive suite of advanced testing equipment operated by trained technicians. This allows us to perform detailed analysis and verification throughout the manufacturing cycle. Our key testing capabilities include:

This Is How We Build a Better Fitting.

This isn't just about passing an audit. This is about building a supply chain you can count on, backed by a process you can see. If you're tired of taking chances on quality, talk to the factory that doesn't.

Request a Factory-Direct Quote Learn More About Our Factory

Markets We Serve Globally

Delphi Fittings proudly supplies high-quality hydraulic components to B2B clients, distributors, and OEMs across the globe. We facilitate efficient shipping worldwide from our manufacturing base in China.

United States
Canada
Mexico
Brazil
Germany
United Kingdom
France
Italy
Spain
Netherlands
Poland
Russia
Turkey
United Arab Emirates
Saudi Arabia
South Africa
India
Australia
Japan
South Korea
China (Domestic)
Vietnam
Indonesia
Singapore
Argentina
Thailand
Malaysia
Chile

...and many other regions worldwide. Contact us to discuss your specific location.