Thin Steel Telescope Tube Section
Welded nonalloy steel tube sections for amateur telescope tubes, 4 inch diameter, 1.5 mm wall (<1.65 mm), precision circular for light baffling. Optics component. 7306.30.10.90.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If optical instrument tubes
Precision optical tubes may use instrument parts.
If industrial instrument housings
Complete instrument casings become machines NESOI.
Not sure which classification is right?
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Import Tips & Compliance
• Surface finish specs for optical tube verification
• Section lengths documented vs full tubes
• Nonalloy certs despite precision use
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