Master Bushing Adapter for Rotary Table
Steel adapters fitting between rotary table and kelly bushing for torque transmission in sinking operations. Principal parts under HTS 8431.43.80.90.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If parts of cranes heading 8426
Drive train parts for cranes/other equipment have separate provisions.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Match API square/kelly dimensions exactly for classification
• Provide torque rating documentation (≥100,000 ft-lbs)
Related Products under HTS 8431.43.80.90
Spider Valve Assembly for Pipe Racks
Mousehole spider valves controlling pipe rack access during tripping on drilling rigs. Boring machinery parts under 8431.43.80.90.
Crown Block Sheave for Drawworks
High-capacity sheaves for crown blocks in drawworks systems handling heavy loads during sinking. Fits 8431.43.80.90 parts definition.
Traveling Block Hook Load Cell
Strain gauge load cells integrated in traveling block hooks for real-time weight monitoring during sinking. Principal use parts HTS 8431.43.80.90.
Mud Pump Piston Assembly for Drilling Rigs
High-pressure piston assemblies for mud circulating pumps on boring rigs, essential for removing cuttings during sinking. Classified under 8431.43.80.90 for parts of 8430.41/8430.49 machinery.
Drill Pipe Stabilizer for Well Sinking
Hardfaced steel stabilizers mounted on drill strings to center tools during borehole sinking in oilfield operations. Fits HTS 8431.43.80.90 as parts of other boring/sinking machinery per statistical notes.
Casing Pipe for Oil Well Drilling Rig
Steel casing pipes used in oil well drilling rigs to line boreholes and prevent collapse during sinking operations. Classified under HTS 8431.43.80.90 as parts for other boring or sinking machinery of heading 8430.41/8430.49, specifically for stabilizing wells in petroleum exploration.