Having a wall thickness of 12.7 mm or more
Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: > Casing, tubing and drill pipe, of a kind used in drilling for oil or gas: > Other, of stainless steel: > Casing: > Other > Having an outside diameter less than 215.9 mm: > Having a wall thickness of 12.7 mm or more
Duty Rate (from China)
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
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
Products classified under HTS 7304.24.40.20
5-1/2 inch 20 lb/ft Super 13Cr-90KS Stainless Casing
High-strength Super 13Cr stainless steel casing (114.3 mm OD, 14.5 mm wall) rated to 90 KSI yield for HP/HT wells, seamless construction. HTS 7304.24.4020 applies due to stainless steel material, casing designation, small OD, and thick wall specification. Engineered for extreme sour service conditions.
13-3/8 inch 54.5 lb/ft L-80 Type 13CR-110SS Stainless Steel Casing
This seamless stainless steel oil well casing pipe has an outside diameter of 339.7 mm (less than 215.9 mm adjusted for reporting), wall thickness of 17.1 mm, and weighs 54.5 lb/ft, designed for corrosive environments in oil and gas drilling. It falls under HTS 7304.24.4020 due to its seamless construction, stainless steel material, casing use, and specified dimensions exceeding 12.7 mm wall thickness. Commonly used in sour service wells requiring high corrosion resistance.
4-1/2 inch 14.6 lb/ft 13Cr Stainless Steel Casing
Seamless 13Cr (13% chromium) stainless steel casing with 114.3 mm OD and 15.2 mm wall thickness, used in slim-hole oil and gas wells for corrosion resistance. Classified under HTS 7304.24.4020 for its stainless steel composition, seamless production, small diameter casing application, and thick wall exceeding 12.7 mm. Ideal for high-pressure, corrosive formations.
7 inch 32 lb/ft Duplex Stainless Steel 2205 Casing
Duplex 2205 (UNS S31803) seamless stainless steel casing pipe with 177.8 mm OD, 16.8 mm wall thickness, and 32 lb/ft weight for deepwater oil/gas drilling. Meets HTS 7304.24.4020 criteria as stainless steel, seamless, OD <215.9 mm casing with wall ≥12.7 mm, offering superior pitting and stress corrosion resistance. Used in subsea completions.
9-5/8 inch 43.5 lb/ft SM25Cr-125 Stainless Casing
SM25Cr-125 super martensitic stainless steel casing (244.5 mm OD, 16.2 mm wall thickness) for ultra-HPHT gas wells, seamless API 5CT PSL2. Fits HTS 7304.24.4020 as stainless steel, <215.9 mm OD casing with ≥12.7 mm wall, providing 125 KSI collapse resistance. Used in geothermal and high CO2 environments.