13-3/8 Inch 54.5 lb/ft K55 Casing with Coupling
Heavy-duty K55 grade non-alloy steel casing, 13-3/8 inch OD at 54.5 lb/ft, threaded ends with factory-installed coupling for surface casing in oil wells. HTS 7306.29.10.30 applies due to its welded construction, nonalloy steel material, coupled importation, and specific use in oil/gas drilling. Provides structural integrity for conductor and surface sections.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If higher strength grades like N80
Statistical breaks exist for different steel grades within the same coupled casing category.
If used in tube/line pipe applications
Casing repurposed for pipeline transport falls under line pipe classifications.
If sold as parts without specified drilling use
Unspecified end-use hollow profiles classify differently from dedicated drilling casing.
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
• Label shipments clearly as 'oil well casing with couplings' to match HTS 'imported with coupling' requirement
• Provide collapse and burst test data in documentation; critical for proving drilling-grade quality
• Check for anti-dumping duties on certain steel origins; file scope rulings if applicable
Related Products under HTS 7306.29.10.30
API 5CT Grade J55 Threaded Casing with Coupling
This is a J55 grade oil well casing pipe made of non-alloy steel, threaded at both ends and imported complete with its matching coupling for secure connection during oil drilling operations. It falls under HTS 7306.29.10.30 because it is casing used in drilling for oil or gas, of iron or nonalloy steel, threaded or coupled, and specifically imported with the coupling attached. The product meets API 5CT standards for strength and durability in downhole environments.
9-5/8 Inch 40 lb/ft J55 Casing with Coupling
A 9-5/8 inch outer diameter casing pipe weighing 40 pounds per foot, J55 grade non-alloy steel, threaded and imported with integral coupling for oil well applications. Classified under HTS 7306.29.10.30 as threaded or coupled casing of iron or nonalloy steel used in oil/gas drilling, imported with coupling. Ideal for intermediate casing strings in standard drilling operations.
7 Inch 26 lb/ft J55 BTC Casing with Coupling
7-inch OD J55 grade casing with 26 lb/ft weight, featuring Buttress Threaded and Coupled (BTC) connection, imported with coupling for production casing in oil/gas wells. Falls under HTS 7306.29.10.30 as welded, nonalloy steel casing threaded/coupled and imported with coupling for drilling use. BTC premium thread enhances gas-tight sealing.
4-1/2 Inch 9.5 lb/ft J55 Production Casing with Coupling
Lightweight 4-1/2 inch production casing, J55 non-alloy steel at 9.5 lb/ft, threaded with coupling for liner applications in oil/gas completion. HTS 7306.29.10.30 covers this welded casing imported with coupling, designed specifically for drilling operations. Used to isolate production zones post-drilling.
20 Inch 94 lb/ft J55 Conductor Casing with Coupling
Heavy wall 20-inch conductor casing, J55 grade non-alloy steel at 94 lb/ft, coupled for initial wellbore stabilization in offshore/onshore drilling. Imported with coupling qualifies under HTS 7306.29.10.30 for threaded/coupled nonalloy steel casing used in oil/gas drilling. Supports initial drilling through unconsolidated formations.
5-1/2 Inch 14 lb/ft N80 Casing with Coupling
N80 grade higher-strength non-alloy steel casing, 5-1/2 inch OD 14 lb/ft, imported threaded with coupling for intermediate/production zones. HTS 7306.29.10.30 includes this welded casing of iron/nonalloy steel, coupled import for oil/gas drilling use. Offers improved yield strength for deeper wells.