DIN 49017-1-1979 电气设备用导管和配件.第1部分:刚性耐火传导式绝缘导管和配件、轻型压力用普通耦合器和弯头
Conduits and fittings for electrical installation; rigid non-flame propagating insulating conduits and fittings, plain couplers and bends for light pressure strength
Conduits and fittings for electrical installation; rigid non-flame propagating insulating conduits and fittings; plain couplers and bends for light pressure strengthFür den Geltungsbereich dieser Norm bestehen keine entsprechenden regionalen o