Graphite Stopper Rod for Molten Metal Pouring
Refractory graphite stopper rod used to control molten steel pouring from ladles. High free carbon content (>50%) provides thermal shock resistance after ceramic firing process. Standard equipment in foundries.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If iron/steel alloy rods
Similar shape but metallic composition classified in iron/steel chapters.
If clay-graphite composite ≤50% carbon
Many stopper rods blend materials, affecting precise carbon percentage heading.
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Import Tips & Compliance
• Provide foundry usage documentation to prevent classification as general rods (Chapter 72)
• Carbon content lab reports mandatory for >50% threshold verification
• Consider bulk vs individual packaging for potential set classification changes
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