Heavy Wall Steel Chimney Pipe
Welded nonalloy steel pipe, circular with wall ≥1.65 mm, designed for chimney and exhaust venting in buildings. Under HTS 7306.30.50 as other welded circular tubes, not for boiler or precision use. Durable for high-temperature flue applications.
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 seamless construction
Seamless equivalents classify under 7304.49 for other seamless tubes.
If wall thickness <1.65 mm
Thin-wall chimney pipes go to the lighter gauge subheading.
If imported as structures
Pre-assembled chimney sections may be seen as structures of 7308.
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Import Tips & Compliance
• Certify compliance with ASTM standards for chimney use to aid customs review
• Document as 'other tubes' excluding boiler tube specs to maintain classification
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