Cold-Reduced 25Cr-35Ni Boiler Tube
Cold-reduced 25Cr-35Ni boiler tubes, seamless and made of modified 25Cr-35Ni steel for waste heat boiler convection sections. These heat-resisting tubes are suitable for carburizing flue gases and are classified under tariff item 7304.51.00 as cold-formed tubes of other alloy steel.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | +50.0% | 50% |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the tubes are not cold-finished
Hot-finished seamless tubes of other alloy steel.
If the tubes are of other alloy steel but not cold-finished
Other seamless tubes of alloy steel, not cold-drawn or cold-rolled.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Ensure the tubes are seamless and cold-reduced, with mill documentation
• Verify the chromium and nickel content to confirm classification as other alloy steel
• Check for compliance with Canadian boiler codes, which may require additional documentation
Related Products under Tariff item 7304.51.00
AL-6XN Cold-Drawn Pipe
Cold-drawn seamless pipe made from AL-6XN super-austenitic high-nickel alloy steel, designed for desalination plants. The circular cross-section and cold-drawing process provide excellent corrosion resistance in chloride-rich environments. This product falls under tariff item 7304.51.00 as a seamless tube of other alloy steel, cold-drawn or cold-rolled.
Alloy 20 Cold-Rolled Seamless Tube
Cold-rolled seamless tube made from Alloy 20 (Carpenter 20) high-nickel alloy steel, designed for sulfuric acid handling in chemical plants. The circular cross-section and cold-rolling process provide excellent resistance to acid corrosion. This product is classified under tariff item 7304.51.00 as a seamless tube of other alloy steel, cold-drawn or cold-rolled.
Alloy 625 Cold-Drawn Seamless Tube
Cold-drawn seamless tube made from Alloy 625 (Inconel 625) high-nickel alloy steel, designed for aerospace and nuclear applications. The circular cross-section and cold-drawing process provide exceptional strength and corrosion resistance at high temperatures. This product falls under tariff item 7304.51.00 as a seamless tube of other alloy steel, cold-drawn or cold-rolled.
Alloy 625 Refining Furnace Tube
Alloy 625 refining furnace tubes, cold-drawn and seamless, made of heat-resisting nickel-chromium-molybdenum steel. Designed for pyrolysis furnace coils in oil refineries, these tubes withstand carburization and high-temperature cracking. They are classified under tariff item 7304.51.00 as cold-drawn seamless tubes of other alloy steel.
Alloy Steel Cold-Drawn Tapered Bearing Tube
Cold-drawn seamless alloy steel tube with a slight taper, designed for tapered roller bearing races. Its circular cross-section and cold-drawn finish qualify it under tariff item 7304.51.00 as a cold-drawn or cold-rolled tube of other alloy steel.
Cold-Drawn 17-4 PH Stainless Steel Capillary Tube
Ultra-precise seamless cold-drawn capillary tubing from 17-4 precipitation hardening stainless alloy steel, with a circular cross-section for medical instruments. This cold-drawn alloy steel tube qualifies under tariff item 7304.51.00.