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316L Stainless Steel GB/T12465-2007 Expansion Joint Corrosion Resistant
Product Spotlights
This 316L Stainless Steel expansion joint complies with GB/T12465-2007, offering exceptional corrosion resistance for aggressive media. Its multi-ply bellows design ensures long cycle life and flexibility, while customizable connections and pressure ratings make it ideal for chemical, petrochemical, and power piping systems. Backed by ISO9001 and global export experience.
Negotiable
MOQ: 1 Unit (Price negotiable depending on order volume and customization)
Key Specifications
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Material:
316L Stainless Steel
Standard:
GB/T12465-2007
Type:
Expansion Joint / Bellows
Payment & Shipping
Payment Methods:
Port of Shipment:
shanghai
Delivery Detail:
7 days
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Material
316L Stainless Steel
Standard
GB/T12465-2007
Type
Expansion Joint / Bellows
Corrosion Resistance
High (Suitable for aggressive media)
Connection Type
Welding / Flange (Customizable)
Pressure Rating
0.6MPa - 2.5MPa (Available upon request)
Temperature Range
-196°C to 400°C (Dependent on design)
Application
Piping systems, chemical, petrochemical, power plants
Shanghai Zhibang Valve Manufacture Co., Ltd. proudly presents our premium 316L Stainless Steel GB/T12465-2007 Expansion Joint, engineered to deliver exceptional corrosion resistance and long-term reliability in demanding industrial environments. As a dedicated manufacturer established in 2016 with ISO9001 certification and an annual export value of US$1-1.5 million, we combine precision manufacturing with rigorous quality control to ensure each expansion joint meets the highest standards of performance and durability. Whether you are managing thermal expansion in chemical pipelines or compensating for misalignment in steam systems, our product is designed to provide a flexible, leak-proof solution.
Product Features & Technical Advantages
- Premium 316L Stainless Steel Construction – Offers superior resistance to chlorides, acids, and alkaline solutions, extending service life in harsh environments.
- Compliant with GB/T12465-2007 Standard – Manufactured strictly according to Chinese national standard for bellows expansion joints, ensuring dimensional accuracy and mechanical integrity.
- Multi-Ply Bellows Design – Reduces stress concentration and enhances flexibility while maintaining high pressure capability.
- Corrosion-Resistant Surface Treatment – Optional pickling and passivation process to further improve resistance to pitting and crevice corrosion.
- Customizable End Connections – Available with welding ends, flanges (ANSI, DIN, JIS), or threaded connections to suit your specific piping layout.
- Wide Temperature & Pressure Range – Designed to operate from cryogenic conditions up to 400°C, with pressure ratings from 0.6MPa to 2.5MPa (higher ratings available on request).
- Long Cycle Life – Finite element analysis (FEA) optimized geometry ensures millions of cycles before fatigue failure, minimizing maintenance downtime.
Technical Specifications (Typical Values)
| Parameter | Range / Value |
|---|---|
| Material | 316L Stainless Steel (UNS S31603) |
| Standard | GB/T12465-2007 |
| Nominal Diameter (DN) | DN15 – DN600 (customizable beyond) |
| Pressure Rating | PN6, PN10, PN16, PN25 (or Class 150, 300) |
| Operating Temperature | -196°C to +400°C |
| Bellows Layers | 1 – 5 layers (depending on pressure) |
| Effective Area | Calculated per design; available in technical data sheet |
Key Benefits for Your Application
- Reduced Downtime – The robust bellows design withstands thermal cycling and vibration, reducing the need for frequent replacements.
- Enhanced Safety – Leak-tight construction prevents hazardous fluid escape, protecting personnel and equipment.
- Cost-Effective Maintenance – The corrosion-resistant 316L material ensures a longer service interval compared to standard 304 or carbon steel joints.
- Versatile Integration – Can be used in new installations or retrofitted into existing systems with minimal modifications.
- Technical Support – Our engineering team provides free consultation on expansion joint selection, sizing, and installation guidance.
At Shanghai Zhibang Valve Manufacture Co., Ltd., we are committed to delivering quality products backed by our ISO9001-certified management system. With a dedicated export team and annual export value exceeding US$1 million to markets across North America, South America, Europe, Asia, Africa, and Oceania, we have earned the trust of global clients. Our factory in Shanghai, China, utilizes advanced CNC machining and automated welding processes to ensure consistent quality. Every expansion joint undergoes hydrostatic testing and dimensional inspection before shipment.
We invite you to experience the reliability of our 316L Stainless Steel GB/T12465-2007 Expansion Joint. Contact us today for a quotation or technical data sheet. Let us help you solve your piping flexibility challenges with confidence.
Frequently Asked Questions (FAQ)
-
Q: What is the difference between 316L and 316 stainless steel for expansion joints?
A: 316L has a lower carbon content (max 0.03%) compared to 316 (max 0.08%), which reduces the risk of carbide precipitation during welding, making 316L more suitable for welded bellows and environments that require superior corrosion resistance, especially in chloride-rich conditions. -
Q: Can this expansion joint be used in high-temperature steam lines?
A: Yes, our 316L expansion joint can operate up to 400°C (depending on pressure and design). For higher temperatures, we recommend consulting our engineering team for a custom solution with internal insulation or alternative materials. -
Q: Does the product come with a certificate of compliance or material test report?
A: Yes, we provide a material certificate (EN 10204 3.1) and a hydrostatic test report upon request. Our ISO9001 quality system ensures full traceability. -
Q: What is the typical lead time for standard sizes?
A: For standard DN sizes (e.g., DN50-DN300), the lead time is approximately 15-20 working days. Custom sizes or special pressure ratings may require 25-30 working days. Please confirm with our sales team. -
Q: Can I get a custom connection type, such as a flanged end with a specific drilling pattern?
A: Absolutely. We offer flanges according to ANSI B16.5, DIN EN 1092, JIS B2220, or other standards. Just provide the required dimensions and drilling template. -
Q: Is the expansion joint suitable for underground or outdoor installation?
A: Yes, the 316L material provides excellent atmospheric corrosion resistance. For underground use, we recommend additional protective coating or wrap to prevent external damage. We can discuss options based on your specific environment. -
Q: How do I determine the correct size and movement requirement for my application?
A: Our technical team can assist you with the calculation based on pipe length, thermal expansion coefficients, anchor points, and allowable stresses. We also provide a free sizing worksheet. Contact us with your system parameters. -
Q: Do you offer samples for testing before bulk order?
A: Yes, sample orders are welcome. We can produce a small batch or even a single unit for evaluation. Shipping charges will apply, and the sample cost can be deducted from a future bulk order.
Send Inquiry to This Supplier
1Yr
Business Type
Manufacturer
Year Established
2016
Annual Export Value
US$1 Million - US$1.5 Million
Product Certifications
ISO9001
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