T95 Sour Service Tubing from Canada
T95 grade tubing qualified for sour service per NACE standards, used in H2S-rich gas reservoirs. HTS 7306.29.81.50 captures this as other drilling tubing with specialized metallurgy. Hardness controlled below 22 HRC for sulfide stress cracking resistance.
Duty Rate — Canada → United States
50%
Rate breakdown
9903.82.0250%Except as provided for in headings 9903.82.14, 9903.85.67 and 9903.85.68, articles of aluminum, of steel or of copper and derivative aluminum or steel articles, as provided for in subdivisions (c)(i)–(v) of U.S. note 16 to this subchapter
9903.05.900%Articles already subject to Section 232 (steel/aluminum/copper + derivatives, autos + parts, wood, medium/heavy vehicles + parts, semiconductors, patented pharma) — U.S. note 52(f)
Import Tips
• Include NACE MR0175/ISO 15156 certificates mandatory for sour service claims
• Segregate from non-sour materials during transport to maintain integrity