Slag Wool Bulk Fiber

Loose slag wool fibers derived from blast furnace slag, supplied in bulk for use in insulation mixes or as filler in construction. HTS 6806.10.00 covers slag wool and similar mineral wools explicitly in bulk form.

Import Duty Rates by Country of Origin

Origin CountryMFN RateCh.99 SurchargesTotal Effective Rate
🇨🇳China3.9%+35.0%38.9%
🇲🇽Mexico3.9%+10.0%13.9%
🇨🇦Canada3.9%+10.0%13.9%
🇩🇪Germany3.9%+10.0%13.9%
🇯🇵Japan3.9%+10.0%13.9%

Alternative Classifications

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

6811.81.00Lower: 35% vs 38.9%

If compressed into slabs or boards

Processed into coherent articles of mineral wools moves to 6811.81 for sound/heat-insulating shapes.

3824.99Lower: 15% vs 38.9%

If chemically treated as a prepared binder additive

Treated mineral wools for industrial chemical use may classify under prepared substances in Chapter 38.

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Import Tips & Compliance

Label as 'bulk' only if not compressed into sheets; otherwise, it may be 6811

Include safety data sheets for fiber diameter to prove non-asbestos compliance

Check for intermixtures; if over 50% other minerals, classification may shift