API 5DP Alloy Steel Drill Pipe 4-1/2 inch OD from Japan
Seamless alloy steel drill pipe with 4-1/2 inch (114.3 mm) outside diameter and wall thickness of 8.5 mm, designed for oil and gas drilling operations. Meets API 5DP specifications for heavy-weight drill pipe used in rotary drilling systems. Classified under 7304.23.6030 due to its seamless construction, alloy steel composition, OD ≤168.3 mm, and wall thickness ≤9.5 mm.
Duty Rate — Japan → United States
10%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• Verify API 5DP/5CT certification and include mill test certificates (MTC) in documentation
• Confirm alloy steel composition meets ASTM A335 or equivalent standards; carbon steel shifts to 7304.19
• Check wall thickness measurement method (ultrasonic vs caliper) to avoid misclassification over 9.5mm