Copper Tube C12200

GNEE is a premier Copper Alloy C12200 Tube Manufacturer in Henan Province, China. We supply ASTM B68 UNS C12200 Copper Tubes, ASTM B75 UNS C12200 Copper Tubes, C12200 Seamless Copper Tubes, and Copper C12200 Seamless Tubes at favorable price points with superior quality.

Our company distributes copper tubes featuring coating layers including tin plating, nickel plating, epoxy coating, and anti-corrosion oil coating for enhanced durability. We function as an established manufacturer to deliver top-performing products that serve plumbing systems, heat exchangers, and electrical systems.

We recently completed an export order of C12200 copper tube to Canada. The product was strictly manufactured according to ASTM B88 standard and is a large diameter, non-standard custom tube, used in the main water supply system of a local commercial building.

ASTM B88 C12200 Mill Test Certificate (MTC)

Customer Acceptance & Inspection Images

Q1: What is the difference between C12200 copper tube and C11000 copper tube?
A: C12200 copper tube contains 0.015-0.04% phosphorus for deoxidation, making it weldable and resistant to hydrogen embrittlement during brazing. C11000 copper tube contains oxygen and cannot be brazed in reducing atmospheres. For HVAC and plumbing where brazing is required, C12200 is the standard choice. C11000 is used for high-conductivity electrical applications with no brazing.

Q2: What is the difference between DHP and DLP copper tubes?
A: DHP stands for "Deoxidized High Phosphorus" (C12200 with 0.015-0.040% P). DLP stands for "Deoxidized Low Phosphorus" (C12000 with 0.004-0.012% P). DHP has better deoxidation and weldability but lower conductivity (85% IACS). DLP has higher conductivity (about 90% IACS) but less complete deoxidation. For most plumbing and HVAC applications, DHP (C12200) is the standard.

Q3: What sizes are available for C12200 copper tubes from GNEE?
A: GNEE supplies C12200 copper tubes in outer diameters from 4mm to 150mm, wall thicknesses from 0.25mm to 8mm, and lengths from 100mm to 6000mm. Custom sizes are available upon request. Tubes can be supplied in annealed (soft), half hard, or hard drawn conditions.

Q4: What is the difference between annealed (O) and hard drawn (H) C12200 copper tube?
A: Annealed (O temper) C12200 tube has lower strength (≥260 N/mm²) but high ductility (≥32% elongation), making it easy to bend and flare in the field. Hard drawn (H temper) tube has higher strength (≥350 N/mm²) but very low ductility and cannot be bent without cracking. Hard drawn is used for straight, rigid lines. Annealed is used when bending is required.

Q5: What coatings are available for C12200 copper tubes?
A: GNEE offers several coating options for C12200 copper tubes:

Q6: What are the typical applications for C12200 copper tubes in HVAC?
A: C12200 copper tubes are widely used in HVAC for refrigerant lines (R410A, R32, R454B), condenser and evaporator coils, and connecting lines between indoor and outdoor units. The tube's high thermal conductivity (339 W/m·K) ensures efficient heat transfer, and the phosphorus deoxidation allows field brazing without hydrogen embrittlement.

Q7: What is the difference between C12200 seamless tube and welded tube?
A: Seamless C12200 tube is manufactured without any welded seam, typically by extrusion and cold drawing, resulting in uniform grain structure and no weak points. Seamless tube has higher burst strength and is required for high-pressure applications like refrigerant lines and heat exchangers. Welded tube (not covered by ASTM B88/B75 for pressure applications) has a longitudinal seam that can be a failure point.

Q8: Can C12200 copper tubes be used for hot water heating systems?
A: Yes, C12200 copper tubes are commonly used for hydronic heating systems, radiant floor heating, and domestic hot water lines. The tube maintains mechanical strength at elevated temperatures (up to 200°F continuously) and has excellent thermal conductivity for efficient heat transfer. For high-temperature systems (above 200°F), consult pressure derating factors.

Q9: What testing is performed on GNEE's C12200 copper tubes?
A: GNEE performs the following tests on C12200 copper tubes:

Q10: What is the thermal conductivity of C12200 copper tube?
A: C12200 copper tube has a thermal conductivity of approximately 339 W/m·K at 20°C (about 1950 BTU/(hr·ft·°F)). This is slightly lower than pure oxygen-free copper (≈390 W/m·K) due to the phosphorus content, but still excellent for heat transfer. For comparison, aluminum has ≈205 W/m·K, and stainless steel has ≈15 W/m·K.

Q11: How should C12200 copper tubes be stored to prevent corrosion?
A: Store C12200 copper tubes in a dry, indoor location away from acids, ammonia, and moisture. Keep plastic end caps on straight lengths to prevent debris entry. For long-term storage, keep original packaging intact. In humid environments, use desiccant packs. The natural surface oxidation (patina) is normal and does not affect performance. Do not store near ammonia-based cleaners.

Q12: What are the international standards equivalent to ASTM C12200 copper tube?
A: C12200 copper tube equivalents by region:

All have similar composition (min 99.90% Cu, 0.015-0.040% P) and are interchangeable for plumbing and HVAC applications.

Poor packaging destroys even the best copper heat exchanger tube. As a professional copper heat exchanger tube factory serving copper heat exchanger tube USA, Europe, UAE, Saudi Arabia, and India, we follow military-grade export packaging standards to ensure zero damage during sea or air freight.

Our Standard Packaging Process:

For U-Bundle Orders: U tube heat exchanger and U tube bundle heat exchanger are placed in dedicated steel jigs inside the crate to prevent bending radius distortion.

Our Certifications & Compliance:

ASTM B111 pdf and ASME SB111 pdf full traceability.

ISO 9001:2015 quality management system.

Third-party inspection accepted: SGS, BV, Lloyds, or TUV.

Copper heat exchanger tube life expectancy testing reports available upon request.

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