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310 Stainless Seamless Furnace Tubing 4-inch

Seamless 310 high-temperature stainless tubing, 4-inch, for furnace muffles/thermowells, circular cross section. HTS 7304.49.00 other seamless stainless. Oxidation-resistant to 2000°F.

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%

More Specific Codes

This product may fall under a more specific subheading:

7304.49.00.05Of high-nickel alloy steel
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7304.49.00.15Hollow bars
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7304.49.00.45Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters
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7304.49.00.60Other
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Alternative Classifications

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

7304.41Lower: 10% vs 35%

If furnace boiler tubes

If for fired furnaces, classifies as boiler tubes.

7304.41.30Lower: 17.5% vs 35%

If drawn high-temp tube

Furnace tubes often worked.

7321.90.60Same rate: 35%

If heat-resisting alloy parts

Finished furnace components under 7321.

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Import Tips & Compliance

• ASTM A312 grade 310 cert; scaling test data optional

• Declare max temp but not boiler-specific

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