13-3/8 inch 54.5 ppf P-110 Stainless Steel Casing
Heavy-duty seamless stainless steel casing for deepwater oil/gas wells, 13-3/8 inch OD, 54.5 lb/ft, P-110 grade for high-pressure environments. Falls under HTS 7304.24.40.80 as seamless stainless steel oil/gas casing with OD >406.4mm, per API 5CT standards for premium grade tubulars.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If alloy steel but not stainless (e.g., 13Cr)
Alloy steel casing (not chromium ≥10.5%) classifies under 7304.23; stainless requires specific chromium/nickel content.
If for line pipe use rather than drilling casing
Same pipe if used for oil/gas transport (line pipe) falls under 7304.59 instead of drilling-specific casing classification.
If when imported with gas compression fittings as downhole assembly
Complete downhole gas compression units classify as gas turbines/engines under Chapter 84, not individual 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
• Obtain ITP (Inspection Test Plan) approval from importer/buyer before shipment; critical for customs clearance
• Declare exact grade (P-110) and premium class on commercial invoice; incorrect specification leads to reclassification
• Budget for anti-dumping duties if sourced from certain countries; check Commerce scope rulings for stainless casing
Related Products under HTS 7304.24.40.80
9-5/8 inch 43 ppf L-80 Stainless Steel Oil Well Casing
Seamless stainless steel casing pipe with 9-5/8 inch outside diameter and 43 pounds per foot weight, designed for oil and gas drilling operations to line and stabilize wellbores. Classified under HTS 7304.24.40.80 due to its seamless construction, stainless steel material, use as oil/gas casing, and OD exceeding 406.4 mm (16 inches). Meets API 5CT specifications for L-80 grade in sour service environments.
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