Standard: ISO 1133, GB/T 3682, GOST 11645

The capillary is made of tungsten carbide.

The length of the capillary is (8.000 ± 0.025) mm.

The internal diameters of the capillary are:

(2.095 ± 0.005) mm(1.180 ± 0.005) mm

Characteristics of the steel capillary:

The Vickers hardness is not less than 500 (from 5 HV to 100 HV).

The roughness of the internal surface of the capillary, Ra, is not more than 0.25 μm.

The capillary should be replaced if its internal diameter fails inspection. The inspection is carried out using a go/no-go gauge.