Fired Clay Chimney Liners
Cylindrical fired clay pipes lining interior chimney flues to protect against heat and corrosion. HTS 6905.90.00 covers these as ceramic constructional goods under the chimney liners provision.
Import Duty Rates by Country of Origin
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If refractory ceramic pipes for high-heat industrial use
High-temperature refractory goods fall under 6902, not general constructional ceramics.
If earthenware and valued over $13/dozen but not constructional
Earthenware (>3% water absorption) tableware provisions if misclassified away from construction.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Document inner diameter and length for customs verification of liner function
• Avoid shipments heated <800°C which are excluded per Chapter note (b)
• Pair with mortar compatibility certs for compliance
Related Products under HTS 6905.90.00
Clay Barrel Roof Tiles
Curved, interlocking clay tiles fired after shaping, used for traditional Mediterranean-style roofing. Classified under HTS 6905.90.00 as ceramic roofing tiles, distinct from building bricks in 6904, meeting Chapter 69 firing requirements over 800°C.
Ceramic Chimney Cowls
Fired ceramic caps designed to fit over chimneys, preventing downdrafts and debris entry. Falls under HTS 6905.90.00 as other ceramic constructional goods explicitly listed in the heading for chimney components.
Ceramic Architectural Coping Stones
Fired ceramic sloped caps for walls and parapets to shed water. Classified in HTS 6905.90.00 as architectural ornaments and other constructional goods.
Clay Spanish Curve Roof Tiles
S-shaped fired clay tiles overlapping for watertight barrel roofing in Spanish style. HTS 6905.90.00 for other ceramic roofing tiles post-firing.
Ceramic Chimney Pots
Tall fired clay pots mounted atop chimneys to improve draft and protect openings. Directly named in HTS 6905 heading as ceramic constructional goods.
Fired Ceramic Wall Coping Tiles
Slanted fired clay tiles capping freestanding walls for weather protection. HTS 6905.90.00 as other architectural constructional goods.