Close Iron Pipe Nipple 1/4 Inch
A minimal-length (close) nipple of wrought iron or nonalloy steel, 1/4-inch size with double male NPT threads for tight space connections in instrumentation piping. Classified in 7307.99.50.15 as other nonalloy steel nipples, excluding specialized alloy or cast types.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If imported unthreaded as tube sections
Lacking threads, it reverts to classification as seamless nonalloy steel tubes.
If high-strength alloy steel version
Alloy content exceeding limits moves to alloy steel fittings subheading.
If made of threaded stainless rod
Stainless steel threaded products classify separately.
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Import Tips & Compliance
• Provide thread gauge certifications to confirm NPT standards and avoid rejection
• Declare exact length (<2 inches for close nipples) to differentiate from standard tubes
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