Oil Well Cement Clinker from Japan
Oil well cement clinker is engineered for high-pressure, high-temperature oilfield applications with specific API Class grades. It qualifies as hydraulic cement clinker under HTS 2523.10.00.00 before grinding to API specifications.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Include API Class certification (e.g
• Class G, H) proving hydraulic properties for oilfield use
• Declare thickening time and compressive strength data to support clinker status