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Help CenterDN50 GB/T12465-2007 Expansion Joint Compact Size for Pipelines
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Shanghai Zhibang Valve Manufacture Co., Ltd. — a professional manufacturer established in 2016 with ISO9001 certification — presents our DN50 GB/T12465-2007 Expansion Joint Compact Size for Pipelines. Designed to absorb thermal expansion, vibration, and movement in piping systems, this compact compensator offers reliable performance in tight spaces. With annual export value of US$1–1.5 million and global shipments to over 15 regions including North America, Europe, and Southeast Asia, our expansion joints are trusted by industry professionals worldwide.
The DN50 compact expansion joint is engineered to meet China's national standard GB/T12465-2007, ensuring strict quality control and consistent dimensions. Its compact design saves installation space while maintaining full functionality. Ideal for long-distance pipelines, HVAC systems, and industrial plants, this product reduces stress on pipe supports and flanges.
Key Features & Benefits
- Compact Size: Perfect for installations with limited space, reducing overall footprint.
- GB/T12465-2007 Compliance: Manufactured strictly to national standard for safety and interchangeability.
- High Flexibility: Absorbs axial, lateral, and angular movements, protecting pipelines from thermal stress.
- Durable Materials: Available in carbon steel or stainless steel (304/316) to suit various media and temperatures.
- Easy Installation: Flanged or welded ends simplify connection to existing pipework (optional).
- Low Maintenance: Bellows design reduces need for regular servicing, lowering operational costs.
- Versatile Applications: Suitable for water, steam, oil, gas, and chemical pipelines.
Technical Specifications
| Parameter | Value / Range |
|---|---|
| Nominal Diameter | DN50 (2 inch) |
| Standard | GB/T12465-2007 |
| Material (Bellows) | SS304, SS316, or Carbon Steel (optional) |
| Operating Pressure | 0.6–2.5 MPa (depending on design) |
| Operating Temperature | -20°C ~ +450°C (material dependent) |
| Axial Stroke | ±15 mm typical (customizable) |
| Lateral Deflection | ±5 mm (customizable) |
| Connection Type | Flanged (SO, WN) or Butt Weld (optional) |
| Applicable Media | Water, steam, air, oil, mild chemicals |
Why Choose Our Compact Expansion Joint?
Our DN50 expansion joint is meticulously manufactured in our Shanghai factory under ISO9001 quality management system. Each unit undergoes hydrostatic and leak testing to guarantee zero defects. The compact design reduces material costs and allows easier handling during installation. Compared to standard-sized compensators, this model delivers the same performance in a smaller package, making it a cost-effective solution for retrofit or space-constrained projects.
Customer Benefits:
- Reduced pipe stress and extended equipment life.
- Lower installation time and labor cost due to lightweight construction.
- Compatibility with international piping standards when flanged with PN/Class ratings (customizable).
- Available with anti-corrosion coating or high-temperature lining upon request.
Trust Shanghai Zhibang Valve — Since 2016, we have supplied over 500,000 valves and fittings to clients in 30+ countries. Our ISO9001-certified facility ensures consistent product quality, and our annual export value of US$1–1.5 million demonstrates our global reach. We offer flexible shipping from Shanghai, Guangzhou, Hong Kong, and Beijing ports. Contact us today for a quotation or technical consultation — let our compact expansion joint solve your pipeline movement challenges.
Frequently Asked Questions (FAQ)
-
Q: What does DN50 mean?
A: DN50 indicates a nominal diameter of 50 mm (approximately 2 inches). It refers to the pipe size the expansion joint is designed to connect to. -
Q: What is the maximum working pressure for this expansion joint?
A: It depends on the material and design. Standard models handle up to 2.5 MPa. Higher pressures are available as custom orders. -
Q: Can this joint be used for high-temperature steam?
A: Yes. With stainless steel bellows and appropriate insulation, it can handle steam up to 450°C. Please specify the temperature when ordering. -
Q: Is the expansion joint supplied with flanges?
A: By default, it comes with flanges (raised face). Weld-end connections are also available upon request. -
Q: How do I install a compact expansion joint?
A: Installation is similar to a standard pipe fitting. Ensure the joint is aligned with the pipe axis, support the weight, and tighten flange bolts evenly. Refer to our installation manual. -
Q: What materials are available for the bellows?
A: We offer SS304, SS316, and carbon steel. For corrosive environments, SS316 or PTFE-lined options are recommended. -
Q: Can you provide custom dimensions or stroke lengths?
A: Absolutely. We accept custom orders for non-standard sizes and stroke requirements. Contact our sales team with your specifications. -
Q: Do you have stock of DN50 compact expansion joints?
A: We maintain regular stock for standard models (carbon steel, SS304). Lead time for custom orders is typically 15–30 working days.
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