Having a wall thickness less than 12.7 mm
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: > Casing: > Of other alloy steel: > Threaded or coupled > Having an outside diameter less than 215.9 mm: > Having a wall thickness less than 12.7 mm
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 7304.29.31.10
API 5CT L80 Type 9 Casing Pipe
Seamless alloy steel casing pipe manufactured to API 5CT L80 Type 9 specifications for oil and gas drilling, with threaded connections and coupled ends. Features outside diameter under 215.9 mm and wall thickness less than 12.7 mm, designed for corrosive environments in downhole applications. Classified under 7304.29.31.10 due to its seamless construction, alloy steel composition, and specific dimensions for oil/gas casing.
7-inch P110 Casing with BTC Coupling
Seamless P110 grade alloy steel casing pipe, 7-inch OD with Buttress Threaded and Coupled (BTC) connections for high-pressure oil well applications. Wall thickness under 12.7 mm suitable for intermediate casing strings in directional drilling. Meets 7304.29.31.10 criteria as threaded/coupled seamless alloy steel casing under 215.9 mm OD.
4-1/2 inch N80-1 Casing Pipe
Seamless N80-1 alloy steel casing with 4-1/2 inch OD, threaded and coupled with premium EUE connections for shallow oil production wells. Wall thickness less than 12.7 mm provides optimal strength-to-weight ratio for liner applications. Classified in 7304.29.31.10 for its seamless alloy steel construction and drilling-specific design.
5-1/2 inch L80-9CR Casing
9% Chromium L80-9CR seamless casing pipe, 5-1/2 inch OD with wall thickness under 12.7 mm, featuring VAM TOP threaded and coupled connections. Designed for sour service (H2S) environments in gas wells. Falls under HTS 7304.29.31.10 as other alloy steel seamless casing for drilling operations.
3-1/2 inch T95 Casing with STC Threads
High-strength T95 seamless alloy steel casing, 3-1/2 inch OD, Surface Thread Casing (STC) connections, wall thickness <12.7 mm for tie-back and shallow conductor applications. Provides collapse resistance in unconsolidated formations. HTS 7304.29.31.10 classification for threaded/coupled oil/gas casing.
6-5/8 inch Q125 Casing Pipe
Quench and Tempered Q125 grade seamless casing, 6-5/8 inch OD with 12.7 mm wall or less, premium threaded and coupled for ultra-high pressure HP/HT wells. Used as intermediate casing in deepwater applications. Classified 7304.29.31.10 for seamless alloy steel drilling casing dimensions.
2-3/8 inch J55 EUE Casing
J55 grade seamless casing 2-3/8 inch OD with External Upset Ends (EUE) 8-round threads and couplings for low-pressure oil production tubing/casing applications. Wall <12.7 mm suitable for shallow wells. 7304.29.31.10 for small diameter threaded alloy steel casing.
4 inch C90 Casing with Premium Threads
C90 grade seamless alloy steel casing, 4 inch OD, wall thickness <12.7 mm, with premium BIG ALPHA VAM threaded and coupled connections for high torque applications. Used in extended reach drilling. Classified 7304.29.31.10 for oil/gas drilling casing specifications.
5 inch K55 BTC Casing
K55 grade seamless alloy steel casing with 5 inch OD, Buttress Thread Coupling (BTC), wall <12.7 mm for intermediate casing strings in conventional vertical wells. Provides good compression resistance. HTS 7304.29.31.10 threaded alloy steel oilfield casing.
9-5/8 inch C110 Casing
C110 grade seamless alloy steel casing with 9-5/8 inch OD (<215.9 mm), wall thickness under 12.7 mm, VAM 21 premium threaded and coupled connections. Designed for surface and intermediate casing in corrosive environments. HTS 7304.29.31.10 as other alloy steel seamless casing.