13-3/8 Inch N80 Type 1 Threaded Casing
Heavy-duty 13-3/8 inch N80 Type 1 non-alloy steel casing with premium threaded couplings for surface and conductor applications in gas wells. Welded construction per API standards for high-pressure environments. HTS 7306.29.10.90 covers this as other threaded casing for drilling.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If containing 0.25%+ chromium
Low-alloy steel with specific chromium content moves to 7306.29.31 subheading.
If cut to short lengths for fittings
Tube fittings or mechanical tubing under 7307 if not full-length drilling casing.
If specialized for gas compressors
Casing used in gas compression equipment classified under turbojet/turboprop parts.
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
• Submit ITP (Inspection Test Plan) and third-party inspection reports from approved mills
• Declare exact wall thickness and collapse resistance to avoid reclassification as tubing
• Bundle in protective thread caps to prevent import delays from shipping damage
Related Products under HTS 7306.29.10.90
API 5CT J55 Threaded Steel Oil Well Casing
Threaded and coupled steel casing pipe made from J55 grade non-alloy steel, used to line oil and gas wells during drilling operations. It meets API 5CT specifications for strength and pressure resistance in drilling applications. Classified under 7306.29.10.90 as other threaded or coupled casing of iron or nonalloy steel for oil/gas drilling.
10-3/4 Inch P110 Threaded and Coupled Casing
High-strength P110 grade 10-3/4 inch casing with VAM threaded couplings for deep, high-pressure oil and gas wells. Non-alloy steel welded pipe per API 5CT for liner applications. HTS 7306.29.10.90 applies to other threaded/coupled nonalloy casing.
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16 Inch Intermediate Casing Threaded Steel
16-inch N80 intermediate casing with LTC (Long Threaded and Coupled) connections for oil well protection against collapse. Welded non-alloy steel API 5CT pipe. Classified under 7306.29.10.90 as other threaded casing for drilling.
8-5/8 Inch Surface Casing Pipe Coupled
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18-5/8 Inch X56 Conductor Threaded Casing
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