Хятад өөрөө өрөмдлөгийн зангуу үйлдвэрлэгч ба …
The self-drilling anchoring system consists of a hollow threaded bolt fitted with a corresponding drill bit to perform drilling, anchoring and grouting in one go.The self-drilling anchor system is mainly used in slope stability, tunneling advance, micro-pile foundation and other engineering, wide...
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