Welding Shielding Gas CO2 from Canada
Pure carbon dioxide used as shielding gas in MIG/MAG welding to protect weld pools from atmospheric contamination. Classified under HTS 2811.21.00.00 as chemically defined carbon dioxide per Chapter 28 subheading note.
Duty Rate — Canada → United States
13.7%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Certify to AWS A5.32 standards; declare shielding gas application
• Use high-pressure cylinders rated for 99.9%+ purity