Borate-Treated Walnut Cribbing Timbers
Rough walnut timbers diffusion-treated with borates for temporary mine shaft cribbing and construction shoring. Classified HTS 4403.12.0060 as nonconiferous other preserved rough wood. Provides insect resistance without heavy chemical impregnation.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If veneer sheets rather than solid timbers
Coniferous veneer sheets over 6mm thick classify under heading 4408.
If tileboard or similar flat panels
Wood fiberboards with surface coatings move to 4418 cellular/particleboard.
If other moving parts of mining machinery
Machinery components including wooden structural elements classify under Chapter 84.
Not sure which classification is right?
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Import Tips & Compliance
• Provide MSHA certification for underground mine applications
• Specify load-bearing capacity testing for structural applications
• Document diffusion treatment process differentiating from surface applications
Related Products under HTS 4403.12.00.60
Creosote-Treated Oak Logs
Rough-cut oak logs treated with creosote preservative to protect against rot and insects, retaining bark in some areas for natural appearance. Classified under HTS 4403.12.0060 as nonconiferous wood in the rough, specifically 'other' category, treated with preservatives but not stripped or squared. Used primarily for outdoor fencing and railway sleepers.
Pressure-Treated Poplar Utility Poles
Roughly squared poplar poles treated under pressure with wood preservatives for utility line support, minimally processed from the log. Falls under HTS 4403.12.0060 as nonconiferous 'other' wood in the rough with preservative treatment. Ideal for rural electrification projects requiring durable, untreated-looking poles.
Stain-Treated Ash Fence Rails
Ash wood rails in rough form, surface-stained with penetrating preservatives for outdoor fencing, not fully stripped or squared. HTS 4403.12.0060 covers this nonconiferous treated rough wood in the 'other' category. Provides natural aesthetic with enhanced weather resistance for ranch and garden applications.
Creosote-Dipped Elm Guardrail Posts
Elm wood posts dipped in creosote preservative, left in rough state for highway guardrails and bridge supports. Classified HTS 4403.12.0060 as nonconiferous other rough wood treated with preservatives. Meets DOT specifications for impact-resistant roadside safety applications.
CCA-Treated Maple Landscape Timbers
Rough maple timbers pressure-treated with chromated copper arsenate (CCA) for garden edging and retaining walls. HTS 4403.12.0060 applies to these nonconiferous preserved rough wood products in other forms. Long-lasting alternative to concrete for residential landscaping projects.
Pentachlorophenol Treated Hickory Pilings
Hickory wood pilings treated with pentachlorophenol for marine dock construction, maintained in rough log form. Under HTS 4403.12.0060 as nonconiferous other rough wood with preservatives. High strength-to-weight ratio ideal for waterfront structural support.