13-3/8 Inch N80-Type Welded Stainless Casing
13-3/8 inch welded stainless steel casing equivalent to N80 grade for surface casing in onshore oil drilling, offering high collapse resistance and weld seam integrity. Used to stabilize the upper wellbore sections. HTS 7306.21.40.00 applies to this other welded stainless casing category.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If not specifically certified for oil/gas drilling
Welded stainless tubes without drilling end-use features classify as other welded stainless hollow profiles.
If of iron or non-alloy steel
Switch to carbon steel welded casing heading if material is non-stainless iron/steel.
If imported assembled with drill collars or stabilizers
As parts of drilling rigs, assembled units classify under Chapter 84 machinery 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
• Provide non-destructive testing (NDT) reports for welds to satisfy importer security filing (ISF) and customs exam requirements
• Avoid common pitfall of undervaluing based on weight; use transaction value with freight-inclusive pricing
• Register with PipeLogix or similar for traceability if re-exporting to Gulf of Mexico rigs
Related Products under HTS 7306.21.40.00
API 5CT L80 Welded Stainless Steel Casing
Welded stainless steel casing pipe conforming to API 5CT L80 specifications, designed for oil and gas drilling operations to line and support well bores. It features a seamless-like weld for high-pressure environments and corrosion resistance typical of stainless steel grades like 304 or 316. Classified under 7306.21.40.00 as welded stainless steel casing, other than having circular cross sections over 406.4 mm or other specific exclusions.
9-5/8 Inch 316L Stainless Steel Welded Casing
9-5/8 inch outer diameter welded stainless steel 316L casing pipe for intermediate casing strings in oil and gas wells, providing corrosion resistance in sour gas environments. Welded construction with premium connections for structural support during drilling. Falls under HTS 7306.21.40.00 as other welded stainless steel casing for drilling.
7 Inch P110 Welded Stainless Steel Casing
7-inch OD P110-grade equivalent welded stainless steel casing for production zones in high-pressure gas wells, with upset threaded ends for premium connections. Provides zonal isolation and corrosion protection. Categorized under 7306.21.40.00 for other stainless welded drilling casing.
20 Inch Conductor Welded Stainless Casing
20-inch welded stainless steel conductor casing for offshore oil platforms, supporting initial wellhead installation and seabed stability. Heavy wall thickness for structural loads. Fits 7306.21.40.00 as other welded stainless drilling casing.
4-1/2 Inch 13Cr Welded Stainless Casing
4-1/2 inch 13Cr (13% chromium) welded stainless steel casing for corrosive CO2 environments in enhanced oil recovery wells. Welded with low-hydrogen processes for toughness. HTS 7306.21.40.00 for other welded stainless steel oil/gas casing.