Other
Parts suitable for use solely or principally with the machinery of headings 84.25 to 84.30. > Parts of boring or sinking machinery of subheading 8430.41 or 8430.49 > Other
Duty Rate (from China)
Products classified under Tariff item 8431.43.00.90
BOP Stack Assembly for Offshore Platforms
> A blowout preventer (BOP) stack assembly is a critical safety component designed specifically for offshore oil and natural gas drilling platforms. It consists of multiple ram and annular preventers that seal the wellbore to control pressure during drilling operations. This assembly is a part suitable for use solely or principally with boring or sinking machinery of subheading 8430.41 or 8430.49.
8431.43.00Catwalk Pipe Skidder Arm
> A catwalk pipe skidder arm is a hydraulic component that transfers pipe from the catwalk to the V-door on offshore platforms for mousehole operations. It is designed specifically for pipe handling on boring or sinking machinery of subheading 8430.41 or 8430.49. This arm is an essential automation part for offshore drilling rigs.
8431.43.00Iron Roughneck Torque Wrench Jaw
> Replaceable jaw inserts for iron roughneck make/break tools on offshore platforms, gripping pipe connections during tripping operations. These hardfaced jaws are critical for torque application and are designed for use with boring or sinking machinery of subheading 8430.41 or 8430.49. They are wear parts specifically for offshore drilling rigs.
8431.43.00Kelly Drive Bushing
> A kelly drive bushing is a precision-machined component that engages the square kelly bar in offshore platform rotary tables, transmitting torque to the drill string. Made from hardened alloy steel, it is designed for use with boring or sinking machinery of subheading 8430.41 or 8430.49. This bushing is a wear part exclusive to drilling rigs.
8431.43.00Master Bushing Insert for Offshore Rotary Table
> A master bushing insert for offshore rotary tables is a replaceable component that supports kelly/spider drives during drilling operations. Made from hardened steel with a square drive hole, it is designed for use with boring or sinking machinery of subheading 8430.41 or 8430.49. This wear part is essential for offshore drilling rigs.
8431.43.00Mud Pump Fluid End Section
> The fluid end section of high-pressure mud pumps circulates drilling fluid through offshore platform systems for boring or sinking machinery of subheading 8430.41 or 8430.49. It contains pistons, valves, and liners exposed to abrasive drilling fluids. This section is a critical part for maintaining drilling operations.
8431.43.00Offshore Derrick Crown Block
> The crown block is the fixed sheave assembly at the top of an offshore drilling derrick or platform, guiding the drilling line for hoisting operations. Built to withstand extreme loads on floating production systems, it is designed for use with boring or sinking machinery of subheading 8430.41 or 8430.49. This component is essential for drill string handling.
8431.43.00Offshore Drawworks Brake Drum
> A heavy-duty brake drum for drawworks hoisting systems on offshore drilling platforms, controlling the descent of drill strings. Engineered for dynamic braking loads exceeding 1M lbs on boring or sinking machinery of subheading 8430.41 or 8430.49. This drum is a critical safety component for drilling operations.
8431.43.00Offshore Drilling Riser Joint
> A marine riser joint connects sections of the riser string used in offshore drilling platforms to convey drilling fluid and guide tools between the rig and subsea wellhead. These high-pressure, corrosion- resistant joints are designed for use with boring or sinking machinery of subheading 8430.41 or 8430.49. They are essential for deepwater drilling.
8431.43.00Offshore Pipe Racking Finger
> Hydraulic pipe racking fingers grip and move drill pipe stands vertically on offshore platform pipe racks for tripping operations. Engineered for boring or sinking machinery of subheading 8430.41 or 8430.49 with marine coatings, these fingers are integral to automated pipe handling. They enhance safety and efficiency on drilling rigs.
8431.43.00Platform Tensioner Cylinder Assembly
> Hydraulic tensioner cylinders maintain constant tension on offshore drilling risers to compensate for vessel heave motion on floating platforms. These cylinders are integral to boring or sinking machinery of subheading 8430.41 or 8430.49 for deepwater drilling operations. They ensure riser integrity in dynamic marine environments.
8431.43.00Spider Slip Bowl Insert
> A hardened insert for spider slip bowls that grip stationary drill pipe in offshore platform rotary tables. Configured for drill pipe and casing OD ranges on boring or sinking machinery of subheading 8430.41 or 8430.49, these inserts are essential for well control and pipe handling. They are wear parts designed for offshore drilling rigs.
8431.43.00Subsea Wellhead Connector
> A high-pressure subsea wellhead connector mates the offshore platform's blowout preventer stack to the subsea wellhead in oil and gas drilling operations. Designed for extreme deepwater pressures, it is a part of boring or sinking machinery of subheading 8430.41 or 8430.49. This connector is critical for well integrity.
8431.43.00Swivel Hose High-Pressure Assembly
> A high-pressure swivel hose connects the rotary swivel to mud hoses on offshore platforms, allowing drill string rotation while conveying drilling fluid. Rated 5,000-10,000 psi with marine-grade reinforcement, it is designed for use with boring or sinking machinery of subheading 8430.41 or 8430.49. This hose is essential for drilling fluid circulation.
8431.43.00Top Drive Gearbox Module
> The gearbox module within an offshore top drive system transmits power to rotate the drill string on oil and gas platforms. Designed for harsh marine environments and high-torque requirements of boring or sinking machinery of subheading 8430.41 or 8430.49, this module is a critical component. It ensures reliable drilling performance.