In industrial piping, the integrity of every connection is vital. Flanges serve as these critical links, uniting pipes, valves, pumps, and other hardware into a functional whole. Among material choices, copper offers unique advantages, making Copper Flanges essential for many demanding uses. USA Piping Solution specializes in manufacturing and supplying high-caliber Copper Flanges. Our extensive range is engineered for dependable performance and longevity, ready for diverse industrial environments. Whether you need standard parts or custom-built components, rely on us for copper connection solutions that ensure smooth operations and lasting service.

Getting to Know Copper Flanges
Essentially, Copper Flanges are engineered connecting rings. Their main job is creating strong mechanical joints between pipe sections or linking pipes to equipment. Bolt holes around their perimeter allow two flanges to be drawn together firmly, typically compressing a gasket between them for a leak-proof seal.
The copper material itself is key. This reddish-brown metal offers distinct benefits. Unlike steel needing coatings, copper naturally forms a protective patina, inhibiting corrosion. Beyond longevity, copper's excellent heat/electrical conductivity and biofouling resistance make it effective where other materials might fail. Copper flanges provide a strong, reliable, and accessible connection method, simplifying assembly, maintenance, and inspections. Choosing the right material, like copper where its strengths fit, is crucial for system safety, efficiency, and durability.
Understanding Copper Grades & Applicable Standards
The real-world performance of Copper Flanges hinges on the specific copper grade and strict adherence to manufacturing standards. USA Piping Solution ensures flanges meet recognized specifications, guaranteeing quality and seamless integration.
A Closer Look at ASTM B62 & B152
- ASTM B62: Covers copper alloy castings (like tin bronzes) often used for valves/fittings. Flanges under B62 offer reliable corrosion resistance and are easily machinable. ASTM B62 Copper Flanges suit plumbing and general industrial roles with moderate strength needs, ensuring compliance with cast part benchmarks.
- ASTM B152: Applies to wrought copper forms (sheet, plate, bar). Wrought flanges generally have enhanced mechanical properties (e.g., higher tensile strength) compared to castings. B152 covers various grades, including those chosen for high conductivity or specific corrosion resistance.
Common Copper Choices: C11000 & C12200 Explained
- C11000 (ETP Copper): Electrolytic Tough Pitch copper is widely used for its outstanding electrical/thermal conductivity (~101% IACS). Ideal for grounding or heat transfer. Contains minimal oxygen, requiring care during welding/brazing in reducing atmospheres to prevent potential hydrogen embrittlement.
- C12200 (DHP Copper): Phosphorus-Deoxidized copper has most oxygen removed, drastically improving weldability/brazability without embrittlement risk. This makes C12200 Flanges ideal for joined assemblies. While conductivity is slightly lower (~85% IACS), it offers excellent formability and corrosion resistance, standard for plumbing tube and many heat exchangers. Often, Pure Copper Flanges refers to choosing between C11000 (conductivity focus) and C12200 (joinability focus).
Our adherence ensures every flange meets precise chemical, mechanical, dimensional, and testing criteria.
Surveying the Types of Copper Flanges Available
Piping systems vary greatly. USA Piping Solution offers a versatile lineup of Copper Flanges to meet diverse connection needs:
- Slip-On Flanges (SORF): Slide over the pipe end, secured with inner/outer fillet welds. Copper Slip-On Flanges are easy to align and cost-effective for lower-pressure systems (plumbing, HVAC).
- Blind Flanges (BLRF): Solid discs sealing pipe ends or ports. A Copper Blind Flange provides access when unbolted. Must withstand full system pressure.
- Weld Neck Flanges (WNRF): Feature a long tapered hub butt-welded to the pipe. Copper Weld Neck Flanges transfer stress effectively, minimizing concentration at the joint. Preferred for high-pressure/temperature, vibration, or critical service due to smooth flow transition.
- Threaded Flanges: Internally threaded to screw onto externally threaded pipes. Allow connection without welding, useful in hazardous areas or where welding is impractical. Primarily for lower pressures; require thread sealant.
- Socket Weld Flanges: Pipe end fits into a recessed "socket"; secured with a fillet weld around the hub. Often used for smaller, high-pressure pipes needing high leak integrity.
- Lap Joint Flanges: Use a separate "stub end" welded to the pipe. The flange ring slides loosely over the stub, simplifying bolt alignment. Useful for systems needing frequent disassembly or connecting to expensive alloy piping.
Choosing the right type ensures system reliability, installation ease, and cost control.
Copper's Strengths: Mechanical Capabilities & Corrosion Resistance
Copper Flanges derive much value from the metal's inherent traits:
- Efficient Conductivity: Copper excels at conducting heat and electricity, valuable for heat exchangers and essential for safe electrical grounding (C11000 preferred).
- Robust Corrosion Defense: Resists corrosion well in water, air, and many chemicals by forming a protective patina. Pure Copper Flanges offer long life in plumbing, marine settings (resisting biofouling), and certain chemical processes. Also resists MIC.
- Good Workability: Copper's ductility allows easy forming and shaping. It also machines cleanly for precise threads, faces, and holes.
These properties combine for dependable, safe, long-lasting performance.
Common Ground: Where Copper Flanges See Service
Thanks to these properties, Copper Flanges play key roles across industries:
- Plumbing and Water Systems: Classic use due to corrosion resistance, ease of joining, and antimicrobial nature. C12200 Flanges are common for brazing.
- HVAC Installations: High thermal conductivity benefits refrigerant lines, chillers, and heat exchangers, boosting efficiency and durability.
- Desalination & Chemical Plants: While alloys often dominate saltwater, pure copper flanges suit specific chemical environments (careful validation needed).
- Electrical Grounding Networks: Premier conductivity makes copper flanges ideal for reliable, low-resistance grounding connections.
- Heat Transfer Equipment: Essential connection points for piping on heat exchangers, leveraging copper's thermal efficiency.
Copper's versatility ensures its place in critical sectors needing reliable connections.
Specifying Copper Flanges: Size & Pressure Considerations
Getting the right specs is vital. USA Piping Solution offers Copper Flanges across standard ranges:
- Range of Sizes: Standard stock typically covers NPS ½ inch (DN15) to 24 inches (DN600). Larger/custom sizes often available. Standard sizing simplifies integration ([Internal Link to Copper Pipes], [Internal Link to Copper Fittings]).
- Pressure Handling: Designated by pressure classes (e.g., ASME aligned Class 150 (150#), Class 300 (300#), Class 600 (600#)) indicating max working pressure at temperature. Higher or PN ratings possible. System conditions dictate the required class.
- Sealing Surface Designs (Face Types):
- Flat Face (FF): Flat surface, used with soft gaskets in low-pressure service.
- Raised Face (RF): Raised area concentrates bolt load, common for Class 300+.
- Ring Type Joint (RTJ): Grooved face for metal ring gasket; robust seal for high pressure/temperature.
Accurate specification of size, pressure class, and face type is essential for a secure, leak-free joint.
Our Pledge: Certifications and Compliance Assurance
Verifiable quality and traceability are paramount. USA Piping Solution ensures Copper Flanges meet stringent benchmarks:
- Material Test Certificates (EN 10204 3.1): We provide MTCs verifying conformance to order specs, including actual test results from the supplied batch for crucial traceability.
- Meeting RoHS / REACH Standards: Flanges can be supplied compliant with these environmental/health regulations when required.
- Additional Quality Checks: We offer custom marking, perform rigorous dimensional checks, and can provide Positive Material Identification (PMI) testing to confirm alloy composition.
Our commitment provides confidence in receiving high-quality, fully documented components.
Choosing USA Piping Solution: Your Advantage for Copper Flanges
Your supplier choice matters. Partnering with USA Piping Solution offers clear benefits:
- Extensive Inventory: Substantial stock of Copper Flanges (grades like C12200 Flanges, types like Copper Slip-On Flange, Copper Blind Flange, Copper Weld Neck Flanges) often means faster delivery.
- Dependable Quality: Strict adherence to standards, quality materials, rigorous QC, and available certifications.
- Practical Technical Support: Knowledgeable team offers guidance selecting the right flange spec.
- Custom Solutions: Capability to supply custom flanges based on your designs/requirements.
- Competitive Value: Premium ASTM B62 Copper Flanges and others at fair market prices.
- Partnership Focus: Clear communication, reliable deliveries, responsive support.
- Compliance Confidence: Products meet regulations with comprehensive documentation.
Experience the difference quality and partnership make with USA Piping Solution.
Completing Your System: Related Piping Products
We also supply related items for complete copper systems:
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Copper Pipes
Seamless and welded pipes for various uses.

Copper Fittings
Elbows, tees, couplings, etc., for pipework assembly.

Gaskets
Suitable materials for effective sealing with copper flanges.

Fasteners
Correct bolts, nuts, studs for secure flange assembly.
Final Call to Action
Are you ready to source high-performance Naval Brass Plates that meet the demanding needs of your application? Connect with the experienced team at USA Piping Solution today. Whether you require standard stock sizes of C46400 Naval Brass Plate, need custom cuts compliant with Naval Brass ASTM B171, or seek technical guidance, we are prepared to help.
Let's discuss your Naval Brass Plates requirements and let you experience the USA Piping Solution difference in quality, expertise, and dependable service.
Request Your Copper Flanges Quote Today!