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Tricone Hole Opener Rock Reamer Drill Bit for Trenchless Hard Rock Formations
2025-04-13
introduction 4240
36''
Customized
AISI, API
Taper-length
Center Drill Bit
High Carbon Steel
Well Drilling
Drilling Tool
Forging
High-Efficiency ,Wear Resistant
Journal /Roller Bearing Bit
4 1/2" API Regular
LONGYUE
Wooden Case
18 INCH
Hebei, China
8431432000
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