Copper flange
Premium Copper Flanges for Industrial Applications
High-quality copper flanges are essential components in plumbing, HVAC, and industrial piping systems. Our copper flanges offer superior durability, excellent thermal conductivity, and corrosion resistance.
Key Specifications of Our Copper Flanges
- Material: C12200 Copper (DHP) with 99.9% purity
- Standards: ASME B16.5, ASTM B62
- Pressure Rating: Class 150 to Class 2500
- Temperature Range: -20°F to 400°F (-29°C to 204°C)
- Surface Finish: Smooth machined finish with optional protective coating
- Marking: Laser etched with material grade, size, and pressure rating
Copper Flange Types and Dimensions
| Type | Size Range | Thickness | Bolt Circle Diameter | Weight (lbs) |
|---|---|---|---|---|
| Weld Neck | 1/2" to 24" | 0.38" to 1.5" | 3.25" to 29.5" | 0.75 to 85 |
| Slip-On | 1/2" to 24" | 0.31" to 1.25" | 3.25" to 29.5" | 0.5 to 68 |
| Socket Weld | 1/2" to 4" | 0.38" to 0.75" | 3.25" to 7.5" | 0.75 to 12 |
| Threaded | 1/2" to 4" | 0.38" to 0.75" | 3.25" to 7.5" | 0.75 to 12 |
| Blind | 1/2" to 24" | 0.38" to 1.5" | 3.25" to 29.5" | 0.75 to 85 |
Applications of Copper Flanges
Our copper flanges are widely used in:
- Potable water systems
- HVAC systems
- Medical gas piping
- Industrial process piping
- Refrigeration systems
- Oil and gas pipelines
Advantages of Copper Flanges
- Superior corrosion resistance compared to steel
- Excellent thermal conductivity (385 W/m·K)
- Natural antimicrobial properties
- Lightweight yet durable
- Easy to machine and install
- 100% recyclable and environmentally friendly
Copper Flange FAQ
What is the maximum pressure rating for copper flanges?
The maximum pressure rating depends on temperature and flange type. At room temperature (72°F/22°C), Class 150 copper flanges can handle 285 psi, Class 300 can handle 740 psi, and Class 600 can handle 1480 psi. Always consult pressure-temperature rating charts for specific applications.
How do I prevent galvanic corrosion when connecting copper flanges to other metals?
Use dielectric unions or insulating gaskets between dissimilar metals. For stainless steel connections, consider using brass transition flanges. Apply protective coatings and ensure proper grounding to minimize electrolytic action in the system.
What maintenance do copper flanges require?
Copper flanges are relatively maintenance-free. Periodic visual inspection for green patina (verdigris) is recommended. Clean with a vinegar-salt solution if oxidation occurs. For high-temperature applications, check bolt torque annually as copper expands more than steel.
Copper Flange Installation Guide
- Clean mating surfaces thoroughly before installation
- Use copper-compatible gaskets (PTFE or graphite recommended)
- Apply anti-seize compound to bolts (copper-based preferred)
- Tighten bolts in a star pattern to ensure even pressure distribution
- Torque bolts to 75% of final value, then complete in two passes
- For high-temperature systems, re-torque after 24 hours of operation
Copper Flange Technical Comparison
| Property | Copper | Stainless Steel | Carbon Steel |
|---|---|---|---|
| Thermal Conductivity (W/m·K) | 385 | 16 | 54 |
| Corrosion Resistance | Excellent | Excellent | Fair |
| Temperature Limit (°F) | 400 | 1500 | 1000 |
| Cost Comparison | High | Medium | Low |
| Weight (lbs/cu in) | 0.323 | 0.289 | 0.284 |
Additional Copper Flange FAQ
Can copper flanges be used for steam applications?
Copper flanges can be used for low-pressure steam systems (up to 30 psi) at temperatures below 400°F. For higher pressure/temperature steam applications, stainless steel flanges are recommended.
What is the lead time for custom copper flanges?
Standard sizes ship within 3-5 business days. Custom copper flanges (non-standard dimensions or special coatings) typically require 2-3 weeks for manufacturing and quality testing.
How do I identify the quality grade of a copper flange?
High-quality copper flanges will be marked with the material grade (C12200), manufacturer's logo, size, pressure rating, and heat number. The surface should be smooth with uniform color and no visible porosity.
Industry Certifications
Our copper flanges meet or exceed the following standards:
- ASME B16.5 - Pipe Flanges and Flanged Fittings
- ASTM B62 - Standard Specification for Composition Bronze or Ounce Metal Castings
- NSF/ANSI 61 - Drinking Water System Components
- PED 2014/68/EU - Pressure Equipment Directive
- ISO 9001:2015 Quality Management System