Concrete Volume Disc Calculator from Japan
Contractor disc calculator for computing concrete volume, rebar quantities, and slab costs from dimensions. HTS 9017.20.4000 classification for construction mathematical instruments. Rugged laminated construction.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
Import Tips
• Construction industry end-use prevents toy classification
• Imperial/metric dual scales common; document both
• Bulk construction supply chain supports industrial use