Industrial Steel Chimney Flue Pipe
Welded nonalloy steel hollow pipe, 300 mm OD with 4 mm wall thickness, for industrial exhaust flues. Fits HTS 7306.30.50.90 for its welded construction, circular section, and dimension specs outside precision tube exclusions.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If threaded or fitted with fittings
Tube/pipe fittings or couplings fall under 7307, not plain tubes.
If for boiler/condenser/superheater tubes
Specific boiler end-use moves to 7306.30.20, dedicated subheading.
If imported as part of fabricated article
If further worked into other articles like brackets, it becomes Chapter 73 'other articles'.
Not sure which classification is right?
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Import Tips & Compliance
• Certify compliance with ASME standards for pressure-bearing to avoid safety rejections
• Label with exact OD/wall measurements; discrepancies lead to measurement disputes
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