Product Specifications
20
Customized
AISI, API
Taper-length
Center Drill Bit
High Carbon Steel
Well Drilling
Drilling Tool
Forging
High Performance
Well Drilling
API
Hf1000, Hf2000, Hf3000, Hf4000, Hf5000
LONGYUE
Wooden Case
20''
Hebei, China
8431431000