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DIN 3357 Duplex Stainless Steel Ball Valve With 5-Year Extended Warranty and Mill Test Report
Product Spotlights
DIN 3357 compliant flanged ball valve constructed from corrosion-resistant duplex stainless steel (UNS S31803/S32205), offering high strength and durability for harsh chemical, marine, and oil & gas applications. Supported by a 5-year extended warranty and full material traceability via a Mill Test Report. Customizable in size, pressure rating, and operation, with ISO9001 certified manufacturing for global supply reliability.
Negotiable
MOQ: 1 Unit (Price negotiable depending on order volume and customization)
Key Specifications
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Material:
Other, Duplex Stainless Steel (e.g., UNS S31803/S32205)
Standard:
DIN 3357
Application:
Other, Chemical
Payment & Shipping
Payment Methods:
Port of Shipment:
China
Delivery Detail:
Delivery time depends on order quantity.
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Material
Other, Duplex Stainless Steel (e.g., UNS S31803/S32205)
Standard
DIN 3357
Application
Other, Chemical
Warranty
5-Year Extended Warranty
Documentation
Mill Test Report Provided
Connection Type
Flanged (DIN standard)
Pressure Rating
Customizable based on application
Temperature Range
Suitable for wide temperature applications
Size Range
Available in various standard sizes
Operation
Manual or Actuated (optional)
As a dedicated manufacturer since 2016, Shanghai Zhibang Valve Manufacture Co., Ltd specializes in producing high-grade industrial valves for global markets. Our DIN 3357 Duplex Stainless Steel Ball Valve represents our commitment to delivering robust, long-lasting solutions for critical fluid control applications. This valve combines superior material strength with precise engineering standards, offering exceptional resistance to corrosion and mechanical stress, ensuring reliable performance in demanding environments from chemical processing to offshore platforms.
Key Features and Technical Advantages:
- Premium Duplex Stainless Steel Construction: Utilizing grades like UNS S31803/S32205, this material offers a balanced microstructure of austenite and ferrite, providing enhanced strength (approximately double that of standard austenitic stainless steels) and superior resistance to chloride-induced corrosion, pitting, and crevice corrosion compared to 316L stainless steel.
- Compliance with DIN 3357 Standard: Designed and manufactured to meet the stringent DIN 3357 specifications for flanged-end ball valves, ensuring dimensional accuracy, pressure ratings, and performance consistency recognized in European and international industrial projects.
- Extended Durability and Warranty: Backed by a 5-Year Extended Warranty, this valve underscores our confidence in its longevity and reliability, reducing long-term maintenance costs and operational risks for clients.
- Full Material Traceability: Each valve is accompanied by a Mill Test Report (MTR), providing verifiable documentation on the chemical composition, mechanical properties, and heat treatment of the duplex stainless steel used, ensuring material quality and compliance with project specifications.
-
Versatile Application Scope: Engineered to perform reliably in a wide range of aggressive media and conditions:
- Chemical & Petrochemical Industries: Handling acids, alkalis, and chlorides.
- Oil & Gas (Upstream & Downstream): Suitable for seawater, crude oil, and natural gas pipelines, both onshore and offshore.
- Marine & Shipbuilding: Excellent for ballast systems, cooling lines, and other shipboard applications.
- Power Generation: Used in cooling water systems, feedwater lines, and other utility services.
- Pulp & Paper, Desalination Plants: Resists corrosive process fluids.
- Robust Sealing and Operation: Features high-quality sealing components (like reinforced PTFE or metal seals) suitable for the valve's pressure class, ensuring tight shut-off and low torque operation. Options for manual handwheel, gear operator, or pneumatic/electric actuation are available upon request.
-
Customizable Configurations: While adhering to DIN 3357, we offer flexibility in:
- Specific size requirements (DN15 to DN600, or as needed).
- Pressure ratings (PN10, PN16, PN25, PN40, etc., or ANSI Class equivalents).
- End connection details (raised face flanges, full face flanges).
- Special testing requirements (additional hydrostatic, pneumatic, or fugitive emission tests).
Technical Specifications Overview:
| Parameter | Typical Value / Description |
|---|---|
| Primary Design Standard | DIN 3357 F4 (Flanged Ball Valve) |
| Common Material Grade | Duplex Stainless Steel UNS S31803 / S32205 |
| Typical Size Range (DN) | DN15 - DN300 (Other sizes customizable) |
| Standard Pressure Rating (PN) | PN16, PN25, PN40 (Customizable) |
| Temperature Range | -20°C to +200°C (Depending on seals) |
| Seat / Seal Material (Typical) | PTFE, Reinforced PTFE, Metal Seals (optional) |
| Operation Type | Manual (Handwheel), Gear, or Actuated (optional) |
| Fire Safe Design | Available upon request (API 607/6FA standards) |
| Face-to-Face Dimensions | Complies with DIN 3357 series |
Benefits for Your Operations:
- Enhanced Corrosion Resistance: Significantly extends service life in chloride-rich environments, reducing replacement frequency.
- High Strength-to-Weight Advantage: Allows for potentially lighter valve bodies with higher pressure capability, beneficial for structural design.
- Reduced Lifetime Cost: The extended warranty and durable material lower total cost of ownership through minimized downtime and maintenance.
- Project Compliance and Quality Assurance: The DIN standard compliance and provided MTR facilitate easier approval in engineering projects, especially in regions adhering to European norms.
- Global Supply Reliability: With annual exports reaching US$1 Million - US$1.5 Million and shipments from major ports like Shanghai, Guangzhou, Hongkong, and Beijing, we ensure timely delivery to markets across North America, South America, Europe, Asia, Africa, and Oceania.
Shanghai Zhibang Valve Manufacture Co., Ltd operates under an ISO9001 certified quality management system, ensuring consistent manufacturing processes and product reliability. Our experience serving diverse industrial sectors worldwide, combined with the tangible commitment evidenced by the 5-year warranty and full material documentation, makes this DIN 3357 Duplex Stainless Steel Ball Valve a prudent choice for engineers and procurement specialists seeking dependable, high-performance fluid control components. We invite you to contact us for detailed quotations, technical consultations, or to discuss custom requirements tailored to your specific application.
Frequently Asked Questions (FAQ):
-
What is the main advantage of duplex stainless steel over 316L stainless steel for ball valves?
Duplex stainless steel offers approximately double the yield strength and significantly better resistance to chloride-induced corrosion, pitting, and crevice corrosion. This makes it more suitable for aggressive environments like seawater, chemical processes, and offshore applications where 316L might suffer from premature failure. -
Does the DIN 3357 standard define pressure ratings?
The DIN 3357 standard specifies dimensions, face-to-face lengths, flange connections, and general design for flanged ball valves. Pressure ratings (PN numbers) are associated with the valve design but are often selected based on application requirements. Our valves can be manufactured to various PN ratings (like PN16, PN25, PN40) as needed. -
What does the 5-Year Extended Warranty cover?
The warranty covers defects in materials and manufacturing under normal operating conditions within specified pressure and temperature ranges. It assures the buyer of the product's durability and provides recourse for issues arising from inherent manufacturing faults, not misuse or improper installation. -
Why is a Mill Test Report important?
The MTR is a crucial quality document from the steel mill. It verifies the chemical composition, mechanical properties (tensile strength, yield strength, hardness), and heat treatment of the raw material. This ensures the duplex stainless steel used meets the required grade specifications (e.g., S31803), providing traceability and confidence for critical projects. -
Can this valve be customized for different end connections or standards?
While the base design complies with DIN 3357 for flanged ends, we can discuss modifications. For instance, valves can be adapted to meet ANSI B16.5 flange dimensions or other connection types upon request. Custom sizes, pressure classes, and special features (like lockable devices, extended stems) are also possible. -
Is this valve suitable for fire-safe applications?
Standard versions may not be fire-safe certified. However, we can provide fire-safe designs compliant with standards like API 607/6FA as an optional feature. Please specify your fire-safe requirement during inquiry. -
What actuation options are available?
The valve can be supplied with a manual handwheel, a gear operator for high-torque applications, or prepared for the mounting of pneumatic, electric, or hydraulic actuators. Actuator selection depends on your control system requirements. -
How does your company ensure quality control?
Our manufacturing processes are governed by an ISO9001 quality management system. Quality control includes material verification (via MTR), dimensional checks, pressure testing (hydrostatic and pneumatic), and functional testing before shipment.
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1Yr
Business Type
Manufacturer
Year Established
2016
Annual Export Value
US$1 Million - US$1.5 Million
Product Certifications
ISO9001
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