Fused Silica Investment Casting Shell Tubes from Mexico
Fused silica investment casting shell tubes are unworked fused quartz tubes used as drain and vent lines in ceramic shell investment casting molds. Their high-temperature stability prevents shell cracking during casting. These tubes are classified under 7002.31.00 as unworked tubes of fused quartz.
Duty Rate — Mexico → Canada
0%
Import Tips
• Confirm the tubes are not cut or shaped for specific molds, as this may constitute working
• Provide evidence of the unworked state and fused silica composition
• If the tubes are part of a casting kit, check if they should be classified with the kit