Oxygen-free copper pipe, also known as oxygen-free copper seamless pipe, refers to a high-purity copper pipe that effectively removes trace impurities contained in copper during the smelting process of copper through a specific production process, so that the purity of copper reaches more than 99.95%, and also contains copper pipes with extremely low oxygen content, which is favored in metal materials for its high purity, excellent electrical and thermal conductivity and wide range of uses. It is mainly used in many fields such as power transmission, electronic equipment manufacturing, thermal equipment, chemical industry and construction.
It has passed the ISO9001, 14001, 45001 system certification, as well as the American standard ASTM B 280, the Japanese standard JIS H 3300, the Australian standard AS 1571 and the European Union PED 4.3 and other product certifications.
High purity: The purity of oxygen-free copper pipe is very high, usually the oxygen content does not exceed 20ppm, the copper content is higher than 99.95%, and its material purity is extremely high, with excellent electrical and thermal conductivity;
High conductivity: The conductivity of oxygen-free copper tube is close to that of pure copper, and the conductivity is generally above 98%, which is an ideal conductive material. It has a wide range of applications in the fields of power transmission and electronic equipment manufacturing;
Easy processing: oxygen-free copper pipe has good processing performance, can be processed by welding, cutting, bending and other complex processes, and is convenient to be applied to various equipment and devices;
Corrosion resistance: Oxygen-free copper pipes have good corrosion resistance to a variety of acids, alkalis, salts and other chemical media, and can maintain their performance and appearance for a long time. It has a wide range of applications in chemical, petroleum and other fields.
Trademark | State | Tensile strengthRm/MPa | Elongationδ5 % | Specifies the plastic elongation strengthRP0.2/MPa | Vickers hardnessHV |
TU0 TU1 TP2 C1220 C12200 CW024A | Hard(H80) | ≥350 | -- | ≥250 | 100~140 |
Semi-hard(H55、H58) | 270~305 | -- | ≥125 | 70~110 | |
Soft(O50) | 225~250 | ≥45 | 40~90 | 40~60 | |
Soft(O60) | 220~250 | ≥45 | 35~85 | 40~60 | |
Note 1: When the customer order requires, the hardness of the copper pipe is tested; Note 2: Except for customers who have special requirements for mechanical properties. |
The conventional production process:
China GB/T 17791-2017, GB/T 20928-2020, GB/T 26302-2020, etc.;
American ASTM B 280:2023, ASTM B 743:2020, ASTM B 819:2018, etc.;
Japan JIS H 3300:2018;
EU EN 12735-1:2020, EN 12735-2:2016, EN 13348; 2016 etc.;
Australia AS 1571:2020.
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