For laying indoor, in tunnel, cable French, well or direct in ground, able to bear external mechanical forces and certain pulling force.
室内、隧道、电缆沟内或直脉地下，能够承受一定的机械外力和一定的拉力。
For laying indoors , in tunnel, cable trench, or direct in ground, able to bear external mechanicalforces, but unable to bear large pulling force .
室内、隧道、电缆沟内，或埋地敷设等，能承受一定机械外力，但不能承受大的拉力。
For laying indoors, in tunnel or cable trench, unable to bear external mechanical forces, Singlecore cable in magnetic duct is not permissible.
室内、隧道、电缆沟等场所，不能承受机械外力，单芯电缆不允许敷设在磁性管道中。
It can be used in the laying of sewage, gas pipe or electric cable tunnel without opening the road surface, railroad or riverbed. It is of simple construction, easy operation and low cost.
它可不开挖跨路面、铁路和河流铺设下水道，煤气管和电缆管路等，结构简单、工作方便、施工费用低。
It can be used in the laying of sewage, gas pipe or electric cable tunnel without opening the road surface, railroad or riverbed. It is of simple construction, easy operation and low cost.
它可不开挖跨路面、铁路和河流铺设下水道，煤气管和电缆管路等，结构简单、工作方便、施工费用低。
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