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Polygonal Kelly Drill Rod Pipe With Taper Small Pitch Thread For Mining And Well

Jinzhou City Shitan Machinery Equipment CO. LTD.
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Polygonal Kelly Drill Rod Pipe With Taper Small Pitch Thread For Mining And Well

Polygonal Kelly Drill Rod Pipe With Taper Small Pitch Thread For Mining And Well

Polygonal Kelly Drill Rod Pipe with Taper Small Pitch Thread for Mining And Well Drilling Rig Machine The Kelly Drill Rod is made of alloy steel, and the two ends are specially heat-treated to be ...

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