HS Code for Refractory cement

HS code 3816.00 covers refractory cements, mortars, and concretes. These are non-fired preparations used to bond refractory bricks or to form monolithic linings in high-temperature industrial environments. Unlike standard construction cement (Portland cement), these products are formulated with refractory aggregates like bauxite, mullite, or chamotte, and specialized binders such as calcium aluminate cement. The classification includes "ramming mixes" which are compacted into place and "gunning mixes" applied via pneumatic spray. These products are classified in Chapter 38 because they are chemical preparations rather than finished ceramic articles. They are essential for the maintenance and repair of industrial furnaces where traditional bricks cannot be easily installed. The material must be capable of resisting high temperatures and thermal shock once cured and fired in situ.

Products Included

• Refractory mortars for bricklaying
• High-temperature castable concretes
• Dolomite ramming mixes
• Refractory gunning materials
• Heat-setting refractory cements

Common Misclassification

Refractory cement is often misclassified under HS code 2523, which is for hydraulic Portland cements used in general construction. It is also confused with HS code 3214, which covers glazier's putty and resinous cements. The key distinction is the refractory property; if the material is designed to withstand temperatures above 1,000°C in industrial furnaces, 3816.00 is the correct heading.

FAQ

What is the HS code for refractory cement?

The HS code for refractory cements, mortars, and concretes is 3816.00.

Is refractory mortar the same as refractory cement?

Yes, for classification purposes, both refractory mortars and cements used for high-temperature applications fall under HS code 3816.00.