Cast Iron Chimney Flue Pipe
Cylindrical hollow cast iron pipe for venting smoke and gases from fireplaces or boilers. Under HTS 7303.00.00.90 as other cast iron pipes, not specialized for pressure or drilling. Its thick walls ensure heat resistance and longevity.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If boiler or superheater tubes
Specific boiler-use cast iron tubes have separate reporting.
If machined for stove components
Appliance-specific cast iron parts fall under stoves/ovens heading.
If threaded for flange connection
Threaded flange-type pipes are fittings, not basic hollow profiles.
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Import Tips & Compliance
• Include fire safety certifications to support non-pressurized flue classification
• Document inner diameter specs to differentiate from boiler tubes
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