Capillary copper tube is a kind of copper tube with very thin inner diameter and outer diameter, which is widely used in household refrigerators, electric freezers, high-precision instruments, electronic equipment meters, etc.; The material is usually made of high-quality copper such as TP2 and TU1, which has excellent thermal conductivity and corrosion resistance. Its application scenarios include:
(1) refrigeration system: capillary copper tubes are widely used in small freon refrigeration devices below 10KW, which can meet different working conditions and refrigeration capacity requirements by changing the length and diameter of the pipe;
(2) Gas transportation: suitable for cold water engineering and environmental protection engineering;
(3) Daily life: In the building water supply system, capillary copper pipes are widely used because of their good thermal conductivity and high low temperature strength.
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 capillary copper tube is very high, the copper content is higher than 99.90%, and its material purity is extremely high, with excellent electrical and thermal conductivity;
Easy processing: capillary copper tube 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;
High compressive strength: Although the capillary copper tube is relatively small in size, it has high low-temperature strength and can withstand certain pressure and mechanical stress without damage.
Technical indicators of copper pipes | tensile strength | Y（≥345Mpa） Y2(245~370) M（≥205Mpa） |
Elongation | M（≥40%） | |
Ventilation | Ensure that the inner hole is unobstructed | |
Airtightness | The difference between the outer diameter and the inner diameter / mm gas pressure/（N/mm2）Duration/s High Precision Normal Grade0.2~0.5＞0.5~0.7＞0.7~1.0＞1.0~1.8--6.97.82.02.94.96.930~60
| |
Cleanliness | ＜0.2g/m2 | |
Oil | ＜ 0.1g/m2 |
The conventional production process:
China GB/T 1531;US ASTM B 360
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