Prezentul standard se refer? la ?mbin?rile electroizolante cu niplu care se monteaz? la conductele metalice ?ngropate protejate catodic, cu DN 25, 32 ?i 40, ?n scopul separ?rii electrice a conductelor de instala?iile deservite.
STAS 7335/5-1990 history
1990STAS 7335/5-1990 Protection against corrosion of burried metallic structures. Electroinsulating joints with nipple