10-3/4 inch 51.5 ppf SMSS 13-5-2 Casing from Japan
Super martensitic stainless steel (13-5-2) seamless casing for subsea oil/gas completions, 10-3/4 inch OD exceeding 406.4mm specification. Engineered for extreme sour service and high collapse resistance. HTS 7304.24.40.80 due to stainless steel composition and oilfield casing use.
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
• Provide SSC (Sulfide Stress Cracking) test results per NACE MR0175/ISO 15156
• Document exact wall thickness and ID; affects pressure rating declarations
• Use TSA (Threaded & Coupled Assembly) designation if applicable to distinguish from BTC couplings