Phone / WhatsApp :+86 15868721920

Adresse :Binhai Industrial Park, Longwan District, Wenzhou

20,000m² Smart Factory

High-capacity manufacturing ensures a stable supply and rapid delivery. 

Quality Evidence by Order

Documented quality checks are reviewed against the confirmed order and inspection requirements.

Material Traceability Options

EN 10204 3.1 documentation can be reviewed when required and confirmed for the order scope.

SUNHY: Integrated Piping & Connection Solutions

Material Documentation • Traceability • Application Review

Source piping components and fasteners against the exact drawing, standard, material, dimensions, service conditions, inspection plan and documentation requirements. Product capability and compliance are confirmed for each order scope before quotation.

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.

Sunhy global fluid solutions sphere showcasing stainless steel flanges, double ferrule instrumentation fittings, hydraulic adapters, and sanitary components.

Quality Assurance

Documented Requirements for Every Connection.

Precision requires evidence. For flanges, fittings and high-strength fasteners, define the applicable standard or drawing, material, dimensions, coating, inspection, traceability and document package. Quality-system certificates, third-party reports and product approvals are supplied only when their legal entity, site, product and validity scope have been confirmed for the order.

Quality Documentation Review

Quality and certification evidence is reviewed against the supplying legal entity, manufacturing site, product scope and order requirements before it is referenced in a quotation.

Material Traceability

EN 10204 3.1 inspection documents may be requested for applicable products. Availability and content must be confirmed for the material, manufacturing route and specific order; one document does not establish universal coverage.

Global Compliance

Engineered to meet rigorous global codes including ASME, PED (EU), and JIS, ensuring seamless integration into international piping systems.

As an INDURA® Approved Supplier, Sunhy has passed rigorous quality audits covering material traceability, dimensional accuracy, and delivery reliability."

*As an INDURA® Approved Supplier, Sunhy has passed rigorous quality audits covering material traceability, dimensional accuracy, and delivery reliability.”

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)

Precision-forged flanges designed to withstand high pressure and extreme environments. ANSI, DIN, JIS standards compliant.

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Instrumentation Fittings & Valves

Leak-free performance for critical process control. Double ferrule design for superior grip and sealing.

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Industrial Pipe Fittings

Durable, corrosion-resistant fittings optimized for general industrial fluid transfer.

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High-tensile stud bolts, hex bolts and nuts can be sourced for critical flange connections in specified stainless and alloy-steel grades. Confirm the drawing or standard, thread, dimensions, property class or material grade, coating, joint conditions and required quality documents before ordering.

Explore Products

Pneumatic Fittings

Quick-connect solutions ensuring efficiency and reliability in air automation systems.

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Sanitary Fittings (Food Grade)

High-purity fittings meeting FDA/3A standards for food, beverage, and pharmaceutical industries.

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Stainless steel flange and fitting PDF3
Stainless steel flange and fitting PDF
Stainless steel flange and fitting PDF2
Stainless steel flange and fitting PDF4

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.