Industrial Stainless Steel Pipe Fittings Manufacturer
ASME-compliant solutions engineered for high-pressure piping, extreme corrosion resistance, and critical process safety.
Sunhy delivers comprehensive flow control solutions for the world’s most demanding industries, including Oil & Gas, Petrochemical, and Power Generation. We specialize in manufacturing high-performance stainless steel pipe fittings—from Butt-weld and Threaded to High-Pressure Forged specifications. Whether you need standard ASME/ANSI components or custom alloys (304/316L, Duplex), our fittings are built to ensure structural integrity and operational reliability.
Our Focus
Manufacturing Excellence for Critical Piping Systems
We combine precision forging technology with automated CNC machining to ensure every fitting meets strict ASME and EN standards. From raw material heat treatment to final dimensional inspection, our integrated production process guarantees superior sealing performance and full traceability for high-pressure environments.
Precision Machining Capacity
- 100+ CNC Lathes: Dedicated automated lines optimized for precision threading and beveling.
- Perfect Fit: Tight tolerances ensure flawless NPT/BSP thread engagement (per ASME B1.20.1).
- Scalable Output: High-efficiency production for sizes 1/8” to 24”, ensuring consistent batch quality.
Material & Process Integrity
- Solution Annealing: Advanced heat treatment ensures max corrosion resistance (Critical for Duplex).
- Forged Strength: High-pressure forging eliminates porosity, meeting ASME B16.11 standards.
- Full Traceability: Complete tracking from raw billet to finished product via heat numbers.
Quality Assurance
- 100% PMI Testing: Spectrometer verification guarantees material grade authenticity before shipping.
- Rigorous Testing: In-house hydraulic testing and CMM inspection for complex geometries.
- Global Compliance: Strictly manufacturing to PED 2014/68/EU and ISO 9001 standards.
Our Products
Industrial Process Piping Components (ASME/EN)
Engineered for the heavy industry. Our butt-weld and threaded fittings serve as the backbone for oil & gas, chemical processing, and water treatment facilities. We specialize in difficult-to-source materials including Duplex 2205 and Super Duplex 2507 for superior stress corrosion cracking (SCC) resistance.
Seamless & Welded Elbows, Tees, Reducers (Sch 10S/40S/80S)
150lb Cast fittings for reliable low-pressure connections.
Socket Weld & Threaded (3000lb/6000lb).
304/304L & 316/316L & Duplex Tube Fittings solutions for desalination and offshore platforms
Our Solutions
Precision CNC Machining for Piping Integrity
We utilize advanced CNC turning centers to manufacture industrial fittings that strictly exceed ASME B16.9 (Butt-weld) and ASME B16.11 (Forged) tolerances. Our automated machining ensures precise bevel angles for rapid on-site welding and flawless thread engagement for high-pressure sealing. With dual-certified 304/304L and 316/316L materials, we guarantee dimensional consistency and full traceability for critical process piping.
Sunhy is your
Complete Fittings System Supplier
Instrumentation Fittings
- Single & Double Ferrule Tube Fittings
- Compression Fittings
- Pipe Fittings (Male/Female Thread)
- Bulkhead & Union Fittings
- Elbows, Tees & Crosses
Industry Applications
- Oil & Gas Instrumentation Lines
- Chemical & Process Control Systems
- Power Generation & Energy Equipment
- Marine & Offshore Installations
- Semiconductor & Clean System Piping
Custom & Specialty Components
- Customized Alloy Fittings (316Ti, 904L, Duplex, etc.)
- High-Pressure Fittings (6,000–10,000 psi)
- Valve Manifolds & Gauge Adapters
- OEM / ODM Fitting Assemblies
Explore Sunhy
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
- Precision Raw Material Control
- Stainless Steel Round Bar
- High-Precision Blank Cutting
- Cold Heading & Die Forging
- Free 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.
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.
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.
