Polymer Concrete Manhole Ring from Mexico
A composite ring blending >95% polymer resin with aggregates for manhole adjustment, lighter than pure concrete. HTS 3926.90.99.40 includes rings for manholes if plastic-predominant per subheading notes. Provides grade adjustment in utility vaults.
Duty Rate — Mexico → United States
15.3%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Conduct polymer content analysis to confirm >95% per note (a)(1) for plastic classification
• Include mix design sheets distinguishing from concrete (Chapter 68)
• Test for chemical resistance if exposed to sewage; declare accordingly