At present, the common underground pipelines are steel tube, reinforced concrete pipe, and PVC hard plastic tube. The cost of them is much high and it is also difficult to lay out.
目前常用的地埋管有钢管、钢筋混凝土管、PVC硬塑料管，这些管道的成本都较高，且施工难度大。
Electri i uire through Bix is a necessary used ad apting to lay cable eltcric instument on comelting part. branch priont and inleetion point-pipe. and cables when the eables is let mto drive-pipe.
穿线盒是电动仪表的电缆穿管敷设时在套管的接连处、电缆的接头处以及分支处和拐弯处都必须采用的必不可少的连接件。
Electri i uire through Bix is a necessary used ad apting to lay cable eltcric instument on comelting part. branch priont and inleetion point-pipe. and cables when the eables is let mto drive-pipe.
穿线盒是电动仪表的电缆穿管敷设时在套管的接连处、电缆的接头处以及分支处和拐弯处都必须采用的必不可少的连接件。
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