Heavy Weight Drill Pipe HWDP 3-1/2 inch Alloy Steel from China
3-1/2 inch (88.9 mm) OD heavy weight drill pipe (HWDP) made from seamless alloy steel tubing with 7.8 mm wall thickness for transition zones in drilling strings. Features upset ends for premium tool joint connections. Falls under HTS 7304.23.6030 as seamless alloy steel drill pipe with specified dimensions.
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
• Include upset end dimensions and connection specifications in commercial invoice
• Ensure no plastic coating or lining; coated pipe may require different classification
• Maintain traceability documentation from steel mill to finished pipe for Customs verification