rigid metal conduit meaning in English

刚体金属导管
硬金属管道

Rigid metal conduit - aluminium , bronze and stainless steel
硬金属导管.铝青铜和不锈钢
Boxes and box covers for rigid metal conduits
钢性金属接线盒和盒盖
Fittings for rigid metal conduits erratum 1
刚性金属导管的接头
Electrical rigid metal conduit - steel
硬金属电导管.钢
Electrical rigid metal conduit - aluminum , bronze and stainless steel
电器用刚性金属导管.铝青铜及不锈钢

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