9-5/8 Inch K55 Coupled Casing Pipe
9-5/8 inch outer diameter K55 grade threaded and coupled casing pipe of non-alloy steel, designed for intermediate casing strings in oil well drilling. Features BTC (Buttress Threaded and Coupled) connections for reliable sealing. Falls under 7306.29.10.90 as other casing for oil/gas drilling, welded construction.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If not threaded or uncoupled
Uncoupled or unthreaded casing uses 7306.29.20, separate from threaded/coupled subheading.
If imported as complete drill pipe assembly
If assembled with tool joints, classified as oil/gas drilling parts under 8431, not bare casing.
If for structural line pipe use
If marketed for pipelines rather than drilling casing, falls under line pipe headings.
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Import Tips & Compliance
• Include detailed dimensional specs (OD, weight per foot) and thread type (e.g
• BTC) in commercial invoice
• Ensure threads are protected during shipping to prevent customs rejection for damage inspection
Related Products under HTS 7306.29.10.90
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