About HS Code 250870
This HS code covers chamotte or dinas earths, whether or not calcined, excluding expanded clays. Chamotte is essentially calcined fireclay, while dinas earth is a calcined silica-rich refractory material. Both are specifically prepared refractory clays, crucial for their high-temperature resistance, low thermal expansion, and consistent properties. They are indispensable components in the manufacture of refractory bricks, crucibles, and other high-temperature industrial linings, providing structural integrity and thermal stability in extreme environments found in steel, cement, glass, and petrochemical industries. Importers are typically heavy industries in manufacturing hubs, while exporters are countries with the raw materials and specialized calcination facilities, such as China, the USA, and Ukraine. Trade focuses on the specific refractory properties, grain size, and chemical composition required for particular applications.
Products Under This Code
Chamotte grog, calcined chamotte, dinas earth, refractory chamotte, fireclay grog, calcined fireclay (specific for chamotte), silica dinas, chamotte powder.
Real World Examples
RHI Magnesita (refractory materials), Vesuvius (refractory products), HarbisonWalker International (HWI), Resco Products, Krosaki Harima.
Common Misclassification
Often confused with raw fireclay (250830) or other general calcined clays, but chamotte and dinas earths refer to specific calcined forms primarily used in high-performance refractory applications.
Products Classified Under 2508.70
Industry
This code belongs to the Minerals & Fuels industry.
Trade Overview
China, India, and Germany are major importers, with China, the USA, and Ukraine being key exporters of chamotte and dinas earths.
Frequently Asked Questions
What is HS code 250870?
HS code 250870 covers: Clays (excluding expanded clays of heading no. 6806); chamotte or dinas earths. This HS code covers chamotte or dinas earths, whether or not calcined, excluding expanded clays. Chamotte is essentially calcined fireclay, while dinas earth is a calcined silica-rich refractory material. Both are specifically prepared refractory clays, crucial for their high-temperature resistance, low thermal expansion, and consistent properties. They are indispensable components in the manufacture of refractory bricks, crucibles, and other high-temperature industrial linings, providing structural integrity and thermal stability in extreme environments found in steel, cement, glass, and petrochemical industries. Importers are typically heavy industries in manufacturing hubs, while exporters are countries with the raw materials and specialized calcination facilities, such as China, the USA, and Ukraine. Trade focuses on the specific refractory properties, grain size, and chemical composition required for particular applications.
What products fall under HS code 250870?
Chamotte grog, calcined chamotte, dinas earth, refractory chamotte, fireclay grog, calcined fireclay (specific for chamotte), silica dinas, chamotte powder.
What are common misclassifications for HS code 250870?
Often confused with raw fireclay (250830) or other general calcined clays, but chamotte and dinas earths refer to specific calcined forms primarily used in high-performance refractory applications.
How is HS code 250870 structured?
HS code 250870 is a 6-digit subheading under the Harmonized System. The first 2 digits (25) identify the chapter, digits 3-4 (08) identify the heading, and digits 5-6 (70) specify the subheading. This code is standardized globally by the World Customs Organization.