Premier Manufacturer of Pneumatic Fittings & Air Tubing

Engineered for reliable automation. We provide Zero-Leak push-in fittings (Composite, Brass, SS316L), precision flow controls, and durability-tested pneumatic tubing. ISO 9001 certified quality for global industries.

Our Focus

Precision Engineering for Demanding Environments

We manufacture stainless steel fittings with advanced automation and precision control, delivering tight tolerances and perfect sealing performance. Backed by ISO, ASTM, and PED certifications, our production ensures repeatable accuracy for every application.

CNC Machining Equipment

➜ Ensuring mass production of standard products

➜ Providing customers with high-precision components

Advanced Processing Centers

➜ Supporting complex machining for irregular and multi-hole products

Large-scale Machining Capacity

➜ Ensuring on-time and perfect delivery for every customer order

Comprehensive Pneumatic Solutions

Engineered for Zero-Leak Performance & Global Compatibility

Sunhy’s pneumatic portfolio is built on a foundation of precision and material science. Whether you need lightweight Composite Fittings for robotics or heavy-duty SS316L components for corrosive environments, our products meet ISO 14743 standards for push-in connectors. With threads available in NPT (USA), BSPP (EU/Asia), and BSPT, we ensure seamless integration into any automation system worldwide, backed by rigorous 100% leak testing protocols.

Composite Push-in Fittings

High-strength PBT polymer body with a stainless steel gripping ring. Tested to withstand 2 million connection cycles without fatigue. Ideal for general automation and packaging machinery.

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Nickel-Plated Brass Push-in

Full brass construction with electroless nickel plating for superior durability. Passes 72-hour Salt Spray Tests, offering robust resistance to mechanical shock and humid environments.

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Stainless Steel 316L Push-in

Manufactured from premium ASTM 316L Stainless Steel with FKM (Viton) seals. Designed for washdown applications in Food & Beverage (FDA) and Pharmaceutical industries.

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Flow Control Valves (Speed Controllers)

Precise linear airflow regulation. Our “captivated needle” design prevents blowout and ensures stable cylinder speed control even under high vibration. Available in Inline and Banjo types.

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Check Valves & Non-Return Valves

Essential for system safety. Allow airflow in one direction while blocking reverse flow to maintain vacuum or pressure. Low cracking pressure (<0.2 bar) ensures rapid response.

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Pneumatic Tubing (PU / Nylon)

Calibrated Polyurethane (PU) for flexibility and Nylon 12 (PA12) for high-pressure lines. Extruded with strict dimensional tolerances (±0.05mm) to guarantee a leak-free seal with our fittings.

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Specialty Tubing (PTFE / Anti-Spatter)

Engineered for extremes. PTFE Tubing handles up to 260°C for chemical lines, while Spark Resistant Tubing (UL94 V-0) protects air lines in welding environments.

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Air Preparation (FRL) & Accessories

Protect your pneumatic tools. High-efficiency FRL units remove moisture and particulates. Includes OSHA-compliant Silencers to reduce exhaust noise levels below 85dB.

Discover Accessories

Our Solutions

Seamless Connections. Precision Built.

Sunhy provides all the stainless steel fittings you need to keep your systems running smoothly. We use advanced CNC machines and a quality system trusted globally to ensure every single part is built perfectly, right down to the dimensions. Whether you are dealing with hydraulic fluid, pressurized air, or sensitive instruments, our strict process control guarantees easy, perfect assembly and reliable flow. This protects your entire infrastructure investment and ensures dependable performance, no matter how tough the environment is.

Sunhy is your

Complete Fittings System Supplier

From Single and Double Ferrule Tube Fittings for precision instrumentation to Pneumatic Fittings for air control, and durable Pipe Fittings, Elbows, Tees, and Crosses, our range covers every connection point. Trusted across Oil & Gas, Chemical Processing, and Power Generation, Sunhy also provides Custom Alloy and High-Pressure solutions defined by meticulous engineering and uncompromising standards.

Instrumentation Fittings

Industry Applications

Custom & Specialty Components

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Engineering Capabilities

It begins with Precision Raw Material Control—using high-grade Stainless Steel Round Bars and verified forging methods such as Cold Heading and Die Forging.
These materials are shaped in Advanced CNC Machining Centers, including 5-Axis operations and High-Precision Tube Cutting, to achieve complex geometries with exact tolerances.
Post-machining, every component undergoes Automated Orbital Welding and fine Internal/External Polishing for a flawless finish.
The process concludes with Comprehensive Testing, Certification, and Traceability, featuring High-Pressure Gas Leak Tests, Spectrometry Analysis (PMI), and full 3.1 MTR Material Records—ensuring every fitting is certified ready for service.

Raw Material & Precision Forging

Advanced CNC Precision Machining

Advanced CNC Precision Machining
High-Precision Tube Cutting
Fitting Product Machining
Threaded Product Machining
5-Axis Complex Part Machining
4-Axis Machining Center
Precision Laser Cutting

Welding, Surface Finish & Finish

High-Standard Welding & Surface Finish
Automatic Orbital Welding
Certified Manual Welding
Internal Precision Polishing
External Fine Polishing
Laser Traceability Marking
Penetrant Testing (PT)

Testing, Certification & Traceabilit

Testing, Certification & Traceability
High-Pressure Gas Leak Test
Spectrometry Analysis (PMI)
3.1 MTR Material Traceability
Surface Roughness Inspection
Ultrasonic Testing (UT)
Carbon Content Analysis
Customized Industrial Packaging

Sunhy solutions for

Testing & Delivery

Sunhy ensures every stainless steel fitting meets exact specifications through a strict three-point verification. Dimensional and thread accuracy are guaranteed using CMM verification. Hydrostatic and pneumatic pressure testing confirms absolute leak-tight performance. Finally, detailed surface inspections and full material traceability ensure consistent, documented quality across every single batch.

Sunhy Solutions for

Quality Control

Minimize the risk of premature system failure and reduce your TCO with Sunhy’s fluidic components. Our manufacturing is secured by a comprehensive compliance umbrella, including ISO 9001/14001/45001 and specialized approvals like EU PED and DNV.

We exceed traditional service life expectations in extreme and corrosive environments by mandating strict material control (PMI verified thermal codes) and dimensional perfection (CMM validation). This rigorous, certified process ensures rapid compliance, protects your infrastructure investment, and delivers the predictable, long-lasting performance required to prevent catastrophic losses.

Everyone will choose the right choice

Why Choose Sunhy

We focus on top-tier materials in every detail, which is our pledge to product durability and the highest safety standards. When quality, reliability, and long-term value are your top considerations, Sunhy’s superior products present the correct choice everyone will make.

Sunhy Quality

VS

Low Quality

Materials: Top-tier steel mill source, Full Traceability (MTC).

Materials: Unknown origin, Vague MTC data.

Chemistry: Alloy content strictly controlled (e.g., Ni/Mo), Superior corrosion resistance.

Chemistry: Insufficient alloy (e.g., Low Ni), Poor corrosion resistance.

Accuracy: High-precision CNC finished, 100% Leak-Proof dimensional fit.

Accuracy: Roughly finished, dimensionally unstable, and prone to leaks under pressure.

Certifications: PED/DNV/TS approved, Strict UT/PT testing on every batch.

Certifications: Only basic ISO, Missing NDT reports.

Finish: Clear stamping, Thorough Passivation, Long-lasting clean surface.

Finish: Blurry mark, Rough finish, Oxide residue.

Experience the Sunhy Difference

Trusted Worldwide, Delivered Anywhere

From a single specialty fitting to complex bulk orders of stainless steel components, Sunhy makes global supply simple and reliable. We proudly serve customers in 30+ countries and maintain over 200 ongoing partnerships, proving our logistical strength. This expertise ensures every order—whether large or small—reaches your site on time and in perfect condition, ready for immediate installation into your critical fluid systems.

Dedicated Customer Support Teams

Serving Impressive List Of Long Term Clients!

Our growth is a testament to how much we value our customers. Exceptional customer service has been the key to our success, ensuring satisfaction and fostering loyalty. Thank you for helping us grow together.

"When you order fittings in bulk, you always brace for some quality variance. But with this huge batch of thread fittings, our QA team was shocked. The dimensional accuracy and surface finish were spot-on across every single piece. It bypassed all our usual inspection delays. Sunhy delivered true consistency, which is critical for keeping our assembly lines running fast. It simply saved us time and hassle."

"We don't mess around with critical specs. We needed a custom run of Duplex high-pressure tubing components, and the material and weld requirements were brutal. Sunhy's engineers didn't just read the manual; they gave us genuinely useful technical advice. Our internal burst test passed by a wide margin. That level of expertise in complex, mission-critical stainless steel manufacturing is why they're still our only supplier."

"We were totally against the clock. We needed a full container of stainless manifold components delivered to our overseas site yesterday. Sunhy handled the entire logistics chain perfectly—the shipping was fast, and the documentation (all the MTRs and certifications) was ready to go. They managed to get such a massive, complicated order to us completely and on time, even across continents. That’s the real value. We'll be calling them again."

Seeing is believing

About Sunhy

See Quality in the Making, Build Trust in Person

Visit Sunhy Factory: See Quality, Build Trust

🏭 Full-Process Tour

See precision machining, assembly, and testing—witness how each stainless steel fitting is born.

🤝 Technical Exchange

Our engineers provide on-site support for selection, customization, and solutions.

Submit your visit request—we’ll contact you within 24h to plan your custom tour.