9-5/8 Inch K55 Coupled Oil Well Casing
9-5/8 inch outer diameter K55 grade threaded and coupled casing for oil well applications, constructed from nonalloy steel. The couplings ensure pressure-tight seals in drilling operations. Fits 7306.29.10 for welded, threaded iron/nonalloy steel casing used in oil/gas drilling.
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More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If made of stainless steel
Stainless steel casing shifts to 7306.29.21 due to material composition in Chapter 73 notes.
If imported as part of complete drilling equipment
When assembled into drilling rigs or machinery, it may classify under parts of oilfield machinery.
If for water well drilling use
Casing not specifically for oil/gas drilling may fall under other welded tubes in 7306.30.
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
• Include detailed dimensional specs (OD, weight per foot) and coupling type (e.g
• STC) in commercial invoice
• Ensure end-user declaration specifies oil/gas drilling to prevent reclassification as general pipe
• Watch for anti-dumping duties on certain origins; verify with CBP for country-specific rates
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