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IEC 60981:2004 ed2.0

Заменен
Extra heavy-duty electrical rigid steel conduits — 31 стр.
This International Standard specifies requirements for EHDERS (extra heavy-duty electrical rigid steel) conduits, couplings, nipples and elbows for electrical installations, including communications and fibre optics. This standard also specifies threads for these components. It is not applicable to the conduits specified in IEC 60423.
ICS
29.120.10 Conduits for electrical purposes / Кабелепроводы