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Twist Drill Rod Foundation Piling DTH Drilling Pipe High Performance Spiral Drill Rod

Anger drill pipe adopts single or double spiral blades, which are prestressed and wound, and then welded automatically. The drill pipe body is made of alloy steel pipe for geological drilling, and the ... Смотрите больше
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Twist Drill Rod Foundation Piling DTH Drilling Pipe High Performance Spiral Drill Rod
Twist Drill Rod Foundation Piling DTH Drilling Pipe High Performance Spiral Drill Rod
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