Copper capillary tube 10x0.8mm, Dnipropetrovsk region.

UMMK-OCM produces copper capillary tubes according to GOST 2624-77.
The material is copper of the M1r, M1F, SF-Cu grades. Tubes are divided into two groups, belonging to which determines the purpose of production. Tubes of group A.
The so-called general purpose tubes.
The outer diameter is 1.2-2.5 mm, the wall thickness is 0.35-0.90 mm.(//tractor-service.com)
They are used in control and measuring devices. Working media:oil,gasoline, air. Tubes of group B.
The outer diameter is 1.4-2.1 mm, the wall thickness is 0.6-0.9 mm. Used in refrigerants.
Tubes are mounted between the throttle and the condenser in freezers.
There are a number of requirements for group B tubes. The surface of the product must be clean, without visual defects, swelling, cracks, scale. Tubes should not be deformed when bent by 90 degrees around a weld metal with a diameter of 3 mm.
Tests of tubes prov.