HS Code 8431.43
Boring or sinking machinery; parts for boring or sinking machinery of subheading 8430.41 or 8430.49
8431.43.80
General Duty: Free
Parts for boring or sinking machinery of 8430.41 or 8430.49, nesoi
8431.43.80.20
NOS
Tool joints, whether or not forged
8431.43.80.40
NOS
Drill pipe fitted with tool joints
8431.43.80.60
NOS
Other
8431.43.80.90
NOS
Of other boring or sinking machinery
8431.43.40.00
NOS
General Duty: Free