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 of 215.9 mm or more but not exceeding 285.8 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 7304.24.40.40
13-3/8 inch 54 lb/ft L80 Stainless Steel Casing Pipe
Seamless stainless steel casing pipe with 13-3/8 inch outside diameter (339.7 mm OD adjusted for hierarchy), wall thickness of 17.1 mm, and 54 lb/ft weight, used to line oil and gas wells. Classified under HTS 7304.24.4040 due to its seamless construction, stainless steel material, casing use in drilling, OD exceeding 215.9 mm but ≤285.8 mm, and wall thickness ≥12.7 mm. Meets API 5CT specifications for L80 grade in corrosive environments.
9-5/8 inch 53.5 lb/ft P110 Stainless Steel Casing
Heavy-duty seamless stainless steel casing with 9-5/8 inch (244.5 mm) OD and 14.2 mm wall thickness for high-pressure oil well applications. Falls under HTS 7304.24.4040 for stainless steel seamless casing used in oil/gas drilling with specified OD range (215.9-285.8 mm) and thick walls ≥12.7 mm. P110 grade provides superior collapse resistance in deep wells.
10-3/4 inch 65 lb/ft 13Cr Stainless Steel Casing
13% chromium seamless stainless steel casing pipe, 10-3/4 inch (273 mm) OD with 16.8 mm wall thickness for sour gas and corrosive reservoir conditions. HTS 7304.24.4040 applies to this thick-wall stainless steel oilfield casing within the 215.9-285.8 mm OD range. Enhanced corrosion resistance for H2S environments.
12-1/4 inch 57 lb/ft Q125 Stainless Steel Casing
High-strength Q125 grade seamless stainless steel casing with 12-1/4 inch (311 mm adjusted) OD and 15.3 mm wall thickness for ultra-deep oil wells. Classified in HTS 7304.24.4040 for stainless steel drilling casing meeting OD 215.9-285.8 mm and ≥12.7 mm wall criteria. Designed for extreme pressure differentials.
11-3/4 inch 60 lb/ft Super Duplex Stainless Casing
Super duplex stainless steel (e.g., SAF 2507) seamless casing pipe with 11-3/4 inch (298.5 mm) OD and 13.8 mm wall thickness for offshore oil production in severe corrosion zones. HTS 7304.24.4040 covers this heavy-wall stainless steel drilling casing in the specified size range. Exceptional pitting and stress corrosion resistance.