Premium high-precision industrial CU unions from a leading China factory. Available in sizes 1/8, 1/4, 3/8, 1/2, 3/4, 1, 1 1/4, 1 1/2, 2 and up to 4. Reliable suppliers of leak-proof forged fittings for pressure vessel systems.
Our high-precision industrial Unions (CU) are engineered for critical applications within the metal pressure vessel and piping industry. Designed to provide a secure, leak-proof connection between two pipes, these components ensure structural integrity and operational safety in high-pressure environments, adhering to the strictest manufacturing standards for metal packaging and pressure containers.
Leveraging advanced forging and casting techniques, our CU unions offer exceptional durability and resistance to extreme thermal and mechanical stress. Available in a comprehensive range of sizes from 1/8" to 4", these fittings are the ideal choice for engineers seeking reliability in complex fluid handling systems and industrial piping networks.
Detailed Parameters
| Size Range | 1/8" to 4" | Dimension E (1/8" - 1/2") | 27.00 / 33.00 / 36.50 / 40.00 mm |
|---|---|---|---|
| Dimension E (3/4" - 1 1/2") | 49.50 / 56.00 / 69.00 / 75.00 mm | Dimension E (2" - 4") | 92.50 / 113.50 / 126.00 / 154.00 mm |
| Dimension D (1/8" - 1/2") | 25.00 / 30.50 / 33.50 / 37.00 mm | Dimension D (3/4" - 1 1/2") | 39.50 / 47.00 / 52.00 / 55.50 mm |
| Dimension D (2" - 4") | 63.50 / 76.50 / 81.00 / 95.00 mm | Product Category | Pipe Fitting / Forged Products |
| Application | Pressure Vessel Systems | Material Standard | Industrial Grade Metal |
Key Advantages
High Pressure Resistance
Specially designed for metal pressure vessel environments to prevent leakage under extreme stress.
Extended Service Life
Forged with premium materials to resist wear and corrosion, reducing maintenance frequency.
Precision Engineering
Strict adherence to E and D dimensional tolerances for a perfect seamless fit every time.
Versatile Sizing
Comprehensive range from 1/8" up to 4" to accommodate diverse industrial piping needs.
Strict Quality Control
Every unit undergoes rigorous pressure testing to ensure 100% reliability in the field.
Easy Installation
Optimized design allowing for rapid deployment and secure coupling in complex layouts.
Product Gallery
Management Platforms
Inventory Tracking
Real-time monitoring of all union sizes from 1/8" to 4" to ensure supply stability.
Production Control
Advanced CNC forging management to maintain precise Dimension E and D accuracy.
Quality Alerts
Automated notification system for batch pressure test results and certifications.
Compliance Auditing
Digital documentation of pressure vessel standards for global export compliance.
Logistics Sync
Integrated shipping management for bulk forged and cast product deliveries.
Order Customization
Flexible platform for specifying custom alloys and special dimensions for unions.
Investment Return Comparison
| Feature Metric | Standard Fittings | Our Forged Unions |
|---|---|---|
| Leakage Rate | Moderate | Near-Zero |
| Installation Speed | Standard | Fast-Coupling |
| Service Life | 3-5 Years | 10+ Years |
| Maintenance Cost | High Frequency | Low Frequency |
| Pressure Stability | Variable | Ultra-Stable |
Frequently Asked Questions
They are primarily used in metal pressure vessel manufacturing and industrial piping to provide secure, detachable connections between pipes.
Dimension E represents the overall length and D represents the outer diameter; precise measurements ensure the union fits perfectly within the designated piping space.
Yes, our forged products are designed to withstand the thermal expansion and stress common in metal pressure vessel operations.
We provide a wide selection ranging from 1/8" for small-scale precision tubing up to 4" for heavy-duty industrial piping.
Absolutely. All our metal pressure vessel components come with full material certifications and pressure test reports.
Yes, we offer customization for various forged and cast alloys to meet the specific chemical and pressure requirements of your project.
English 
Albanian 
Arabic 
Armenian 
Azerbaijani 
Belarusian 
Bengali 
Bulgarian 
Croatian 
Czech 
Danish 
Dutch 
Esperanto 
Finnish 
French 
German 
Greek 
Hebrew 
Hungarian 
Indonesian 
Irish 
Italian 
Japanese 
Khmer 
Korean 
Kyrgyz 
Lao 
Latin 
Lithuanian 
Malay 
Myanmar 
Norwegian 
Persian 
Polish 
Portuguese 
Romanian 
Russian 
Serbian 
Slovak 
Slovenian 
Spanish 
Swedish 
Tagalog 
Thai 
Turkish 
Turkmen 
Uzbek 
Vietnamese 
Zulu 
