Galvanized Steel HVAC Duct Seals
Zinc-plated flat steel strips designed to seal joints in heating and ventilation ductwork, providing airtight and corrosion-resistant connections. Meets HTS 7212.30.10.90 criteria: nonalloy steel, flat-rolled, width <300mm, thickness >0.25mm, zinc-coated. Essential component in commercial HVAC systems.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If plastic-coated or with adhesive backing
Plastic coatings or adhesives qualify as 'further worked' per Chapter 72 notes, shifting classification.
If formed into complete duct fittings or elbows
Fabricated into tube/pipe fittings moves from flat-rolled Chapter 72 to Chapter 73 fittings heading.
If width of 300-600mm
The tariff structure separates <300mm from 300-600mm widths in zinc-coated flat-rolled products.
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Import Tips & Compliance
• Document compliance with SMACNA standards for HVAC sealants to support proper flat-rolled classification
• Avoid entries without coating specification; uncoated steel would classify under 7212.10, different duties
Related Products under HTS 7212.30.10.90
Galvanized Steel Roofing Flashing
Pre-cut galvanized steel strips used for weatherproofing roof joints, with zinc coating applied via hot-dip galvanizing process. Falls under HTS 7212.30.10.90 as flat-rolled nonalloy steel, width under 300 mm, thickness over 0.25 mm, and zinc-coated. The cladding provides corrosion resistance essential for outdoor roofing applications.
Zinc-Plated Steel Fence Rail Brackets
Flat galvanized steel mounting brackets for securing fence rails, featuring slotted holes and heavy zinc coating for outdoor durability. HTS 7212.30.10.90 applies as nonalloy flat-rolled steel, <300mm wide, >0.25mm thick, zinc-coated otherwise. Used in residential and agricultural fencing.
Galvanized Steel Gutter Apron Flashing
Continuous galvanized steel flashing for gutter-to-roof transitions, preventing water infiltration with durable zinc coating. Precisely matches HTS 7212.30.10.90: flat-rolled nonalloy steel <300mm width, >0.25mm thickness, zinc-plated. Standard in residential roofing systems.
Zinc-Coated Steel Shelf Brackets
Heavy-duty galvanized flat steel brackets for supporting shelving units, with reinforced edges and corrosion-resistant zinc plating. HTS 7212.30.10.90 classification: nonalloy flat-rolled, width <300mm, thickness >0.25mm, zinc-coated. Common in retail and warehouse racking.
Galvanized Steel Pipe Hangers
Flat zinc-coated steel straps for suspending plumbing and gas pipes from ceilings and walls. Fits HTS 7212.30.10.90 as flat-rolled nonalloy steel, under 300mm width, over 0.25mm thick, with zinc plating for corrosion resistance in wet environments.
Zinc-Plated Steel Door Threshold Seals
Narrow galvanized steel strips for weather sealing under exterior doors, featuring drip edges and heavy zinc coating. HTS 7212.30.10.90: flat-rolled nonalloy steel <300mm wide, >0.25mm thick, zinc-coated for exterior durability.