Polymer Concrete Manhole Ring from China
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 — China → United States
25.3%
Rate breakdown
9903.05.3112.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of China, as provided for in U.S. note 52 to this subchapter
9903.88.157.5%Except as provided in headings 9903.88.39, 9903.88.42, 9903.88.44, 9903.88.47, 9903.88.49, 9903.88.51, 9903.88.53, 9903.88.55, 9903.88.57, 9903.88.65, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(r) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(s)
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