Extra Heavy Seamless Steel Casing
Seamless nonalloy steel casing for structural piling, 159 mm OD and 20 mm wall thickness for foundation support in construction. Thick walls provide exceptional collapse resistance. Classifies under HTS 7304.39.0044 as seamless circular iron/nonalloy steel tube with OD 114.3-190.5 mm and ≥19 mm wall.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If specifically for oil/gas casing
OCTG casing has dedicated heading 7305.20 irrespective of wall thickness.
If fabricated into equipment structures
Welded/assembled structures classify under 7308.40 for platforms/rigs.
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Import Tips & Compliance
• Piling end-use declaration prevents OCTG misclassification; include project specifications
• Collapse test data supports thick-wall claims during customs examination
• Bundle configurations must not mimic drill pipe assemblies
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