drilling joint
Drilling joints:
Drill joints: oil drill pipe joints; lock joints; reducer union；crossover coupling and blank joint；blank bit; drilling joint
Material:40Cr、35CrMo、4137H、45Mn2
Length：general or customized according to needs，lengthen 1~2inch
Gina Gao
HP: +8615831190484
SKYPE: ginagao321
Email:ginagao321(AT)gmail(DOT)com
Drill joints: oil drill pipe joints; lock joints; reducer union；crossover coupling and blank joint；blank bit; drilling joint
Material:40Cr、35CrMo、4137H、45Mn2
Length：general or customized according to needs，lengthen 1~2inch
Gina Gao
HP: +8615831190484
SKYPE: ginagao321
Email:ginagao321(AT)gmail(DOT)com
Certificate
- ISO 9001:2008
Main Products
oli drill pipe, coalbed gas drill pipe, shale gas drill pipe,parts