Heavy Wall Seamless Casing Pipe 11-inch OD 18mm WT
Seamless non-alloy steel casing pipe with 279.4 mm OD and 18 mm wall thickness for oil well protection. Precisely matches HTS 7304.39.0052 specifications for large OD seamless pipes. Provides structural integrity in drilling operations.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If API 5CT certified casing
Casing/tubing meeting API 5CT for oil/gas wells specifically heads to 7304.29.
If with internal/external longitudinal welds
Welded heavy wall pipe (>4.5mm) classifies under 7305 for line pipe applications.
If OD exceeding 285.8 mm
Larger diameters beyond 285.8 mm fall into subsequent OD subheading.
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Import Tips & Compliance
• API 5CT drift and coupling test reports needed if premium connections present
• Wall thickness gauged ultrasonically; under-gauge risks reclassification to thinner subheading
• Declare as 'other' pipe, not OCTG if lacking API 5CT premium class designation
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