English to Serbian Tech/Engineering Mechanics / Mech Engineering Heat exchangers

Zna li neko kako se na srpskom kaže "pressure-containing" a kako "pressure-retaining" parts (postaviću još jedno pitanje za pressure retaining)? Evo pojašnjenja:

Pressure Containing Member: A component which is exposed to and contains pressure
Pressure Retaining Member: A component which holds one or more pressure containing members together but is not exposed to the pressure.

Hvala puno.