Contact Platform Support
Help Center304 Stainless Steel GB/T12465-2007 Expansion Joint for Marine Pipe
Product Spotlights
Related Products
-
GB/T12465-2007 Expansion Joint With Mill Test Report and WarrantyNegotiableMOQ: 1 Unit -
PTFE Bellows GB/T12465-2007 Expansion Joint Flexible for ChemicalsNegotiableMOQ: 1 Unit
-
DN100 GB/T12465-2007 Expansion Joint Large Diameter for MarineNegotiableMOQ: 1 Unit
-
1.0MPa Rated GB/T12465-2007 Expansion Joint Flange ConnectionNegotiableMOQ: 1 Unit
-
GB/T12465-2007 Compliant Expansion Joint for Marine Piping SystemNegotiableMOQ: 1 Unit
At Shanghai Zhibang Valve Manufacture Co., Ltd., we are proud to present our 304 Stainless Steel GB/T12465-2007 Expansion Joint, specifically designed for marine pipe applications. As a manufacturer established in 2016 with an annual export value of US$1-1.5 million, we combine precision engineering with rigorous quality control to deliver durable and reliable expansion joints that withstand the harsh conditions of marine environments. Our product is built to absorb thermal expansion, vibration, and misalignment in piping systems, ensuring long-term performance and safety.
This expansion joint complies strictly with the GB/T12465-2007 national standard, offering excellent flexibility and corrosion resistance thanks to the high-quality 304 stainless steel construction. It is ideal for shipbuilding, offshore platforms, and other marine piping systems where reliability is paramount. Below we provide detailed technical specifications and features to help you understand why this product is the right choice for your project.
Key Features & Benefits
- High-Quality Material: Made from 304 stainless steel, offering excellent resistance to corrosion from seawater, chemicals, and high humidity – a critical requirement for marine applications.
- Standard Compliance: Manufactured in accordance with GB/T12465-2007, ensuring dimensional accuracy, pressure rating, and performance consistency.
- Multi-Axis Movement: Capable of absorbing axial, lateral, and angular movements, reducing stress on connected pipes and equipment.
- Vibration Dampening: Effectively reduces vibration and noise transmitted through piping systems, enhancing operational comfort and equipment lifespan.
- Customizable Options: Available in a wide range of sizes (DN50 to DN600) and connections (flanged, welded, or customized), with optional working pressure from 0.6MPa to 2.5MPa and temperature range from -20°C to 200°C.
- Long Service Life: Robust construction and quality welding ensure a fatigue life of over 10,000 cycles under normal operating conditions.
- Easy Installation: Lightweight design with standard flange dimensions simplifies installation and maintenance, saving time and labor costs.
Technical Specifications
| Parameter | Details |
|---|---|
| Material | 304 Stainless Steel (body, bellows, flanges) |
| Standard | GB/T12465-2007 |
| Nominal Size (DN) | DN50 – DN600 (custom sizes available upon request) |
| Working Pressure | 0.6 MPa, 1.0 MPa, 1.6 MPa, 2.5 MPa (optional) |
| Working Temperature | -20°C to +200°C (higher temperature options available) |
| Connection Type | Flanged (PN6/PN10/PN16/PN25), Welded, or Custom |
| Movement Capability | Axial: ±30mm, Lateral: ±20mm, Angular: ±15° (varies by size) |
| Certification | ISO9001:2015 |
Why Choose Our Expansion Joint?
Our expansion joint is engineered for demanding marine environments where corrosion resistance and mechanical reliability are non-negotiable. The 304 stainless steel bellows are manufactured using advanced hydroforming technology, ensuring uniform wall thickness and superior fatigue resistance. Each unit undergoes rigorous testing, including pressure testing, leak testing, and dimensional inspection, to guarantee compliance with GB/T12465-2007 and customer specifications.
Compared to rubber or plastic expansion joints, the 304 stainless steel version offers higher temperature resistance, better chemical compatibility, and longer service life. It also reduces the need for frequent replacements, lowering total cost of ownership. Whether you are retrofitting an existing system or building a new vessel, this expansion joint provides a reliable solution for accommodating thermal expansion, pump vibration, and foundation settlement.
Trusted by Global Customers
Shanghai Zhibang Valve Manufacture Co., Ltd. has been serving the marine industry since 2016, with annual export value exceeding US$1 million. We export to markets across North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, the Middle East, and more. Our ISO9001-certified quality management system ensures that every product leaving our factory meets the highest standards. We are located in Shanghai, China, with convenient access to major ports (Shanghai, Guangzhou, Hong Kong, Beijing) for efficient worldwide shipping.
Contact us today for a quote or technical consultation. Our team of experienced engineers can help you select the right expansion joint for your specific marine pipe application. We offer customization, fast delivery, and competitive pricing. Let us support your next project with a product that delivers performance and peace of mind.
Frequently Asked Questions
Q1: What is the difference between GB/T12465-2007 and other standards?
GB/T12465-2007 is a Chinese national standard specifically for bellows expansion joints used in piping systems. It defines dimensions, pressure ratings, and testing methods. Our products comply with this standard, ensuring compatibility with Chinese marine and industrial systems, while also meeting international requirements through customization.
Q2: Can this expansion joint be used for corrosive fluids other than seawater?
Yes, 304 stainless steel offers good resistance to many corrosive media, including fresh water, oil, and mild chemicals. For highly corrosive fluids (e.g., strong acids), we recommend 316L or other special alloys – please contact us for custom solutions.
Q3: What is the maximum working pressure and temperature?
Standard working pressure ranges from 0.6MPa to 2.5MPa, and temperature from -20°C to 200°C. Higher pressure and temperature options are available on request. Please specify your requirements when ordering.
Q4: Do you provide flanges as per international standards like ANSI or DIN?
Yes, we can customize flanges to match ANSI, DIN, JIS, or other standards upon request. Our standard flanges are designed as per GB/T9119, but we offer flexibility to meet your needs.
Q5: How long is the delivery time?
Typical delivery time for standard sizes is 15-25 working days after order confirmation. Custom orders may require 30-40 working days, depending on complexity. We can expedite rush orders for an additional fee.
Q6: What is the expected service life of this expansion joint?
Under normal operating conditions (proper installation, moderate temperature/pressure), the fatigue life exceeds 10,000 cycles. Actual service life depends on factors such as movement frequency, temperature, and corrosive environment. Regular inspection is recommended.
Q7: Can you provide a test certificate or material certificate?
Yes, we can provide a material certificate (mill test report) for 304 stainless steel, as well as a pressure test certificate and a product conformity certificate. These are available upon request.
Q8: What ports do you ship from?
We ship from Shanghai, Guangzhou, Hong Kong, and Beijing. The port of shipment can be selected based on your location and shipping requirements.
Send Inquiry to This Supplier
You May Also Like
-
Double O-Ring Sealed Marine Deck Hand Pump Leak-Proof OperationNegotiableMOQ: 1 Unit
-
CCS Approved Marine Fixed Deck Manual Hand Pump Aluminum Bronze Body DN20 DN25NegotiableMOQ: 1 Unit
-
Marine Bilge Water Hand Pump Deck Mounted for Emergency DrainageNegotiableMOQ: 1 Unit
-
Marine Fuel Transfer Hand Pump Deck Mounted for Safe RefuelingNegotiableMOQ: 1 Unit
-
Cast Iron Body Marine Deck Hand Pump for Long Service LifeNegotiableMOQ: 1 Unit
-
Factory Direct Marine Deck Hand Pump With After-Sales ServiceNegotiableMOQ: 1 Unit
-
Standard Compliant Marine Deck Hand Pump With Mill Test ReportNegotiableMOQ: 1 Unit
-
304 Stainless Steel Marine Deck Hand Pump With 1500 PSI Pressure RatingNegotiableMOQ: 1 Unit
-
High Pressure 2000 PSI Marine Deck Hand Pump for Heavy Duty Marine UseNegotiableMOQ: 1 Unit
-
CS Series Marine Deck Hand Piston Pump Self-Priming Bilge Water Oil Transfer PumpNegotiableMOQ: 1 Unit
