发布时间:2025-01-20 12:15:22
电缆套官的型号与电缆截面相关,也与成品外径.
一般来说,电缆的截面不得大于电缆套管的内截面40%.
电缆的截面=成品外径的平方*0.7854.
电缆套官的内截面=内径的平方*0.7854.
采光井楼板钢筋混凝土结构浇筑楼板包工包料包工人费用浇筑费用一平方大概是多少
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