bored pile casing
If the casing pipe is not provided , the clay or the soft soil shall keep on falling in the excavated bore of the pile and while casting the concrete, ...
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 bored pile casing 相關參考資料
Why is casing used in pile construction? - Quora
If the casing pipe is not provided , the clay or the soft soil shall keep on falling in the excavated bore of the pile and while casting the concrete, ... https://translate.google.com.t |