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API Factory High Quality 8-1/2 Steel Body Coring Bit Well PDC Coring Drill Bit Oil and Gas

2025-04-13 introduction 4140
8-1/2 ECS1306/S232
Customized
AISI, API
Taper-length
Center Drill Bit
Alloy Steel
Well Drilling
Oil Drilling, Gas Drilling
Eastar
Steel Made Box
8-1/2 Steel Body Coring Bit
China
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