20,000m² Smart Factory
High-capacity manufacturing ensures a stable supply and rapid delivery.
ISO 9001 & PED Certified
Guaranteed precision with strict adherence to quality control systems.
100% Material Traceability
Full transparency with 3.1 MTRs, strictly meeting international standards.
SUNHY: Integrated Piping & Connection Solutions
Certified Metallurgy • Full Traceability • 30+ Years of Manufacturing Excellence
Secure your infrastructure with a unified source for certified piping and fastening systems. Leveraging over three decades of manufacturing expertise, we deliver ISO-compliant flanges, fittings, and high-tensile industrial fasteners designed to ensure absolute integrity in extreme environments.
Engineering the World’s Critical Connections.
From a local forge in 1988 to a global manufacturer today, Sunhy’shistory has been defined by precision and continual evolution.
Reliability starts with metallurgy. We manufacture to ASTM, DIN, and ISO standards using premium 304/316L stainless steel and select exotic alloys. This commitment to material integrity extends from our flanges and fittings to our industrial fasteners, ensuring exact chemical and mechanical performance across every joint in your process.
With strict control from raw material sourcing to final inspection, everybatch meets the same uncompromising standard-trusted by OEMs andengineering firms worldwide.
Quality Assurance
Uncompromising Standards. Certified Integrity for Every Connection.
Precision requires proof. At Sunhy, manufacturing excellence is backed by a rigorous, third-party audited Quality Management System. We go beyond basic compliance to provide the comprehensive documentation and transparency you need. Our rigorous Quality Management System extends across our entire portfolio. Whether you are sourcing flanges, fittings, or high-strength fasteners, we go beyond basic compliance to provide unified traceability and transparency. When you choose Sunhy, you are securing an audit-ready, integrated solution for your most critical projects.
ISO 9001:2015 Certified
Our facilities operate under a certified framework that standardizes every operation, ensuring consistent output and minimizing operational risk.
Material Traceability
We provide EN 10204 3.1 Mill Test Certificates (MTC) for all products, including stud bolts and nuts, ensuring verified chemical composition and mechanical properties from the melt to the finished assembly.
Global Compliance
Engineered to meet rigorous global codes including ASME, PED (EU), and JIS, ensuring seamless integration into international piping systems.
SOLUTIONS
The Complete Piping Connection Portfolio
From precision fluid components to high-strength fasteners, we deliver unified reliability across every critical connection in your system.
Industrial Flanges (Stainless Steel)
Instrumentation Fittings & Valves
Industrial Pipe Fittings
Pneumatic Fittings
Advanced Manufacturing Capabilities
Precision / Capacity / Integration.
Our state-of-the-art facility spans over 20,000 square meters and operates with a fleet of 200+ advanced CNC machines. Integrating automated production lines with rigorous process control, Our state-of-the-art facility is engineered for versatility. Integrating automated production lines with rigorous process control, we deliver precision manufacturing for stainless steel fittings, flanges, and industrial fasteners. From raw material forming to thread rolling and final cleaning, every step is optimized for efficiency and consistency.
- 5-Axis CNC Machining Centers
- High-Precision Forging Lines
- Automated Ultrasonic Cleaning
- Spectrometer Material Analysis
- Custom OEM Fabrication Service
Technical Insights
Access expert insights across our comprehensive piping and connection solutions. Get the engineering data and standards you need for smarter procurement.
DIN 931 vs. DIN 933: The Difference Between Partial and Full Thread Hex Bolts
How to Measure Hex Bolt Dimensions: Length, Diameter, and Pitch (A Step-by-Step Guide)
Understanding Bolt Grades: Grade 5 vs. Grade 8 and Class 8.8 vs. 10.9 (A Complete Guide)
Hex Head Bolts: The Complete Guide (Types, Grades & Dimensions)
Stainless Steel Hex Nuts Guide: 304 (A2) vs 316 (A4) Grades & Standards
Where to Buy Screws in Bulk: Trusted Industrial Screw Supplier & Manufacturer
Metric Thread Tolerances: A Complete Technical Guide
