ASME SA-335 P11 Seamless Superheater Tube from United States
SA-335 P11 grade seamless alloy steel tubes used in fossil fuel power plant superheaters for steam generation at extreme temperatures. The 1.25% chromium-molybdenum composition ensures creep resistance in boiler environments, it falls under tariff item 7304.59.00 as other seamless tubes of alloy steel.
Duty Rate — United States → Canada
50%
Rate breakdown
26SUR5050%United States Surtax Order (2026) — 50% on US products
Import Tips
• Ensure the tube is seamless and circular
• Provide an ASME SA-335 certificate
• Confirm the tube is not a part of general use as per Section Note 2