TP347H Heat Exchanger Alloy Tube

Stabilized TP347H seamless alloy tube, 16-inch (406 mm max) OD for high-temp heat exchangers. Falls under HTS 7304.59.20.70 as other alloy steel tube for heat exchangers, precise OD range.

Import Duty Rates by Country of Origin

Origin CountryMFN RateCh.99 SurchargesTotal Effective Rate
🇨🇳ChinaFree+35.0%35%
🇲🇽MexicoFree+10.0%10%
🇨🇦CanadaFree+10.0%10%
🇩🇪GermanyFree+10.0%10%
🇯🇵JapanFree+10.0%10%

Alternative Classifications

This product could be classified differently depending on its characteristics or intended use.

7306.30.10Same rate: 35%

If welded stainless construction

Welded stainless versions go to 7306.30 for boiler pipes.

Not sure which classification is right?

Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.

Import Tips & Compliance

Solution annealing certs required; measure OD post-processing; pitfall: exceeding 406.4 mm pushes to next size category

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