4-1/2 Inch 13.5ppf L80-9CR Stainless Steel Casing Tube
Seamless 9CR stainless steel casing for intermediate drilling sections, 4-1/2 inch OD (114.3 mm), wall thickness ≥12.7 mm, threaded and coupled for well integrity. HTS 7304.24.30.20 applies due to stainless steel composition, seamless manufacture, drilling-specific design, and specified dimensions.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If for boiler or superheater use
End-use shifts to other seamless stainless tubes if not for drilling operations.
If sold as individual uncoupled lengths
Threaded or coupled status determines subheading; uncoupled may classify differently.
If austenitic stainless with specific alloy
Certain stainless grades may fall under Chapter 72 for steel articles.
Not sure which classification is right?
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Import Tips & Compliance
• Label with precise API specs and heat numbers for traceability; ensure customs review of chemical composition for stainless verification
• Pitfall: incorrect OD measurement leading to wrong subheading
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