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ASTM B75 Seamless Copper Tube is a high-quality drawn and annealed copper tubing designed for applications that require excellent thermal and electrical conductivity, superior formability, and smooth internal surfaces.
Manufactured in strict accordance with ASTM B75 / ASME SB75 standards, these seamless copper tubes are ideal for heat exchangers, condensers, plumbing, refrigeration, instrumentation, and industrial systems.
We supply ASTM B75 Copper Tubes in a wide range of sizes, tempers, and alloys including C12200 (phosphorus-deoxidized copper) and C10200 (oxygen-free copper) - available in straight lengths and coils.
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High Quality
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Advanced Equipment
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Professional Team
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Custom Service
Product Standards & Grades
| Standard | Specification | Common Alloys | Temper | Form |
|---|---|---|---|---|
| ASTM B75 | Seamless Copper Tube | C10200, C12000, C12200 | Hard / Soft (H / O) | Straight Lengths / Coils |
Standard Dimensions for ASTM B75 Seamless Copper Pipe
| Nominal Size (Inches) | Outside Diameter (OD) (mm) | Wall Thickness (WT) (mm) | Weight per Meter (kg/m) |
|---|---|---|---|
| 1/4" | 6.35 | 0.51 | 0.12 |
| 3/8" | 9.53 | 0.61 | 0.20 |
| 1/2" | 12.70 | 0.71 | 0.32 |
| 5/8" | 15.88 | 0.81 | 0.43 |
| 3/4" | 19.05 | 0.91 | 0.56 |
| 1" | 25.40 | 1.02 | 0.87 |
| 1 1/4" | 31.75 | 1.12 | 1.24 |
| 1 1/2" | 38.10 | 1.22 | 1.56 |
| 2" | 50.80 | 1.32 | 2.00 |
| 2 1/2" | 63.50 | 1.42 | 2.52 |
| 3" | 76.20 | 1.52 | 3.15 |
| 4" | 101.60 | 2.03 | 4.88 |
Outside Diameter (OD): ±0.15mm (depending on pipe size)
Wall Thickness (WT): ±0.10mm
Pipe Grades/Alloys Available
C10200 (Oxygen-Free Copper): For applications requiring high conductivity and minimal oxygen content.
C12200 (Phosphorus-Deoxidized Copper): Common for plumbing, HVAC, and refrigeration systems.
C12000 (Deoxidized Copper): Typically used for brazing and welding applications.
Chemical Composition (Typical)
| Element | C10200 (%) | C12200 (%) |
|---|---|---|
| Copper (Cu) | 99.95 min | 99.9 min |
| Phosphorus (P) | – | 0.015 – 0.040 |
| Oxygen (O) | ≤ 0.001 | ≤ 0.040 |
| Others | ≤ 0.05 | ≤ 0.05 |
Mechanical Properties
| Property | Hard (H) | Soft (O) |
|---|---|---|
| Tensile Strength (MPa) | 250 – 310 | 200 – 240 |
| Elongation (%) | 25 – 35 | 35 – 45 |
| Hardness (HV) | 70 – 100 | 50 – 70 |
| Density (g/cm³) | 8.9 | 8.9 |
ASTM B75 Seamless Copper Pipe Tensile Requirements
Products Applications
ASTM B75 Seamless Copper Tubes are widely used across industries such as:
Air Conditioning & Refrigeration Systems (ACR)
Heat Exchangers & Condensers
Plumbing & Water Supply Lines
Instrumentation & Hydraulic Lines
Gas and Oil Transmission
Automotive Cooling Systems
Electrical Conductive Tubing
Packaging & Delivery
Packed in plastic film with protective end caps
Bundled or placed in wooden cases for export
Custom labeling available (size, alloy, heat number)
Fast delivery within 7–15 working days based on order quantity
Worldwide shipping via air, sea, or courier
Quality Assurance
All ASTM B75 Copper Tubes are manufactured under ISO 9001-certified processes, ensuring:
100% chemical and mechanical inspection
Eddy current or hydrostatic testing for leaks
Material Test Certificates (MTC) as per EN 10204 3.1
Dimensional and surface finish inspection before delivery
FAQ – Frequently Asked Questions
Q1: What is the difference between ASTM B75 and ASTM B88?
A1: ASTM B75 covers seamless copper tubes for general engineering, heat exchange, and refrigeration uses, while ASTM B88 is specific to plumbing water service tubes.
Q2: Which copper grade is best – C10200 or C12200?
A2:
C10200 (Oxygen-Free Copper): Best for high-conductivity and vacuum applications.
C12200 (Phosphorus-Deoxidized Copper): Better weldability and cost-effective for plumbing/HVAC.
Q3: Can ASTM B75 tubes be used for refrigeration and air-conditioning?
A3: Yes. ASTM B75 C12200 copper tubes are widely used in refrigeration, condenser, and evaporator coils.
Q4: What testing is performed before delivery?
A4: Tubes undergo dimensional inspection, eddy current or hydrostatic testing, and chemical analysis before shipment.
Q5: Do you offer custom-cut or coil-form tubes?
A5: Yes, we provide custom sizes, coils, and pre-cut lengths as per customer drawings or specifications.
contact us
📧 Email: office@dongmjd.com
📞 Phone / WhatsApp: +86 15769214734
We are a professional manufacturer and supplier of ASTM B75 Seamless Copper Tubes (C10200 / C12200), offering high-quality, precision-engineered copper tubing for HVAC, heat exchanger, and industrial applications worldwide.
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