API 5DP Alloy Steel Drill Pipe 4-1/2 inch OD from China
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 — China → United States
35%
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
9903.91.0125%Effective with respect to entries on or after September 27, 2024, articles the product of China, as provided for in subdivision (b) of U.S. note 31 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