4 Inch H40 Production Casing
Seamless H40 nonalloy steel casing, OD 101.6 mm, wall 6.0 mm, used in production zones of oil wells post-drilling. HTS 7304.29.20.10 applies to this dimensionally compliant seamless drilling casing.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If other mechanical tubing
Non-OCTG seamless tubes of circular cross-section go to 7306.19.
If stainless steel construction
Stainless casing classified under 7307 for complex cross-sections.
If imported with pump components
Pump shafts or housings classified as parts of liquid pumps.
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
• Specify plain end vs. threaded in commercial invoice for accurate description
• Quarantine procedures for oil residue contamination during inspection
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