Weld Backing Flux Tape from Canada
Adhesive tape impregnated with ceramic flux for root pass backing in pipe welding. HTS 3810.90.5000 includes this innovative welding auxiliary preparation, providing gas shielding without purging. Dissipates completely post-weld.
Duty Rate — Canada → United States
15%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Burn-off temperature curve confirms welding auxiliary status
• Adhesive carrier specs avoid plastic tape reclassification
• Pipe diameter compatibility range for pipeline application validation