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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If wall thickness 12.7 mm or greater
Thicker wall casing for deeper wells moves to statistical suffix .50 within same heading.
If not specifically for oil/gas drilling
General seamless alloy steel tubes not designated as drilling casing fall under Chapter 73 heading 7306.
If welded construction
Welded casing pipe, even for oil/gas use, classified under 7304.39 rather than seamless 7304.29.
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• Verify API 5CT certification and provide mill test certificates (MTC) showing chemical composition and mechanical properties
• Confirm outside diameter and wall thickness measurements match HTS specifications to avoid reclassification
• Include end-user declaration specifying oil/gas drilling use to support casing classification
Related Products under HTS 7304.29.31.10
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.