Copper capillary tube 8x1 mm, Dnipropetrovsk region.

A capillary is the smallest blood vessel, a tube with a narrow valve. Small-diameter tubes with a thin wall are called capillary by analogy. The outer diameter does not exceed 2.5 mm, and the wall does not exceed 0.9 mm. Such tubes are indispensable in devices where it is necessary to transport liquids, air oroil. In addition to the size suitable for various uses, copper tubes have a number of advantages. They do not deform under changes in temperature and pressure, withstand a wide range of temperatures, without losing the quality of the metal. Copper tubes are corrosion-resistant, plates, reliable and durable.