Heavy Wall 4-inch Stainless Oilfield Drill Stem from China
Seamless 4-inch OD stainless steel heavy wall drill pipe (>9.5 mm) used as drill stem in rotary oil drilling rigs. Precisely matches HTS 7304.22.0045 for small OD stainless drill pipe specs.
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
• Use API upset designations in invoices to differentiate from plain-end tubing
• Batch test for wall thickness uniformity—variations >0.5mm trigger audits
• Avoid generic 'steel tube' descriptions; specify 'stainless drill pipe oil/gas'