12-1/4 Inch V150 Sour Service Casing from Mexico
Seamless V150 alloy steel casing optimized for H2S sour service, 12-1/4 inch (311.15 mm) OD, 17 mm wall thickness. Classifies HTS 7304.29.4160 as other alloy seamless casing in OD range with heavy wall for structural support.
Duty Rate — Mexico → 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
• NACE MR0175/ISO 15156 certification mandatory for sour service alloy classification
• Wall thickness variation tolerance must be documented (<12.5% under nominal)
• Ensure invoice specifies 'casing' not 'tubing' to avoid 7304.23 misclassification