13-3/8 Inch N80 Threaded Oil Well Casing from Japan
Heavy-duty 13-3/8 inch N80 grade seamless nonalloy steel casing, externally threaded for field coupling in deep oil wells. Essential for borehole integrity during gas drilling. Covered by 7304.29.10 as other casing of nonalloy steel that is threaded.
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
• Submit chemical composition certificates proving nonalloy status (carbon steel with minimal alloy elements)
• Use BTC (Buttress Threaded and Coupled) or STC threading notations in invoices to match HTS criteria
• Avoid bulk packaging without individual protection; damaged threads lead to rejection and reclassification risks