13Cr Stainless Steel Drill Pipe 4-1/2 Inch OD
Seamless 13% chromium (13Cr) stainless steel drill pipe, 4-1/2 inches outer diameter, used in corrosive environments like sour gas wells. Equipped with premium connections for high-pressure drilling, it provides superior corrosion resistance over carbon steel. Falls under HTS 7304.22.00 due to its seamless construction and specific design as drill pipe for 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 of other alloy steel not qualifying as stainless
Non-stainless alloy drill pipe uses the subheading for other steel types in 7304.
If used as casing rather than drill pipe
Same seamless steel but for well casing/tubing shifts to the casing subheading.
If specialized for high-temperature gas drilling equipment
May classify as parts of gas turbines if integral to turbo-drill assemblies.
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Import Tips & Compliance
• Provide chemical composition certificates proving >10.5% chromium content for stainless steel classification
• Label as 'drill pipe' with drilling specs to distinguish from tubing; mislabeling leads to reclassification
• Check for upset ends or friction welds, which are allowed but must be documented to prevent heading to parts
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