339.7 mm OD 15.11 mm WT Alloy Casing
Seamless alloy steel casing precisely 339.7 mm (13-3/8 inch) OD with 15.11 mm wall thickness, API 5CT compliant for oil well lining. Classifies HTS 7304.29.4160: correct alloy type, OD range, minimum wall thickness met.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If longitudinally submerged arc welded
LSAW manufacturing for large diameter uses 7305 heading.
If specialized downhole equipment part
If designed for specific pump or packer assembly.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Metric dimensions common internationally; provide both metric/imperial conversions
• Wall thickness exactly 15.11 mm clears 12.7 mm threshold - document precisely
• International mill certificates (EN 10204 3.1) preferred by CBP
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