ASTM A179 Carbon Steel Superheater Tube OD 19mm
Seamless cold-drawn carbon steel tube conforming to ASTM A179 standards, with 19mm OD for superheater applications in power plants. Classified under HTS 7304.39.0002 for its non-alloy steel composition, circular seamless profile, and design for superheaters handling high-temperature steam. Provides excellent corrosion resistance and thermal conductivity.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If OD 38.1mm or greater
Diameter threshold determines subheading within 7304.39; larger OD moves out of .0002.
If not suitable for pressure service
Non-boiler tubes of nonalloy steel classify under 7307 as other tubes/pipes.
If for turbocharger end use
Tubes designed specifically as turbocharger parts may fall under machinery Chapter 84.
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Import Tips & Compliance
• Include ASTM A179 certification and hydrostatic test results to prove suitability for superheaters
• Measure and declare precise OD; tubes approaching 38.1mm risk reclassification to higher diameter subheadings
• Avoid bulk packaging misdeclared as raw material; specify finished tube form for correct heading
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