P22 Superheater Tube OD 28mm
Seamless P22 (2.25Cr-1Mo) alloy steel tube with a 28 mm outside diameter, engineered for superheater applications in utility boilers. It withstands prolonged exposure to steam at temperatures above 500°C, making it essential for high-temperature service. Classified under tariff item 7304.59.00 as other seamless tubes of circular cross-section in 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 tube is made of stainless steel rather than other alloy steel
Stainless steel tubes are classified separately under this heading, depending on the specific alloy composition.
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 tube meets ASTM or ASME specifications and provide a mill test certificate to verify alloy composition
• Declare the exact outside diameter and wall thickness to confirm classification under 7304.59.00
• Consult the CBSA for applicable duty rates, as they may vary based on the country of origin
Related Products under Tariff item 7304.59.00
17-4PH Stainless Alloy Seamless Bearing Tube
Seamless tube of 17-4PH precipitation-hardening stainless alloy steel, circular cross-section, used for corrosion-resistant ball and roller bearings in marine or food processing equipment. Heat-treatable to high strength, it falls under tariff item 7304.59.00 as other seamless tubes of alloy steel.
2.25Cr-1Mo Boiler Feedwater Heater Tube
Seamless 2.25% chromium-1% molybdenum tubes for economizers and feedwater heaters in coal-fired boilers. Provides oxidation resistance up to 600°C, it falls under tariff item 7304.59.00 as other seamless tubes of alloy steel.
253MA Heat Exchanger Tube
Seamless 253MA austenitic steel tube for heat exchangers in boilers, with nitrogen-enhanced heat resistance up to 2000°F. Used in refining applications where high-temperature strength is critical.
310 Stainless Boiler Tube
Seamless 310 stainless steel tube certified heat-resisting for boiler tubes in high-temperature service. Resists scaling in superheaters and feedwater heaters, making it ideal for power generation equipment.
AISI 440C Stainless Bearing Race Tube
Seamless circular tube from AISI 440C martensitic stainless alloy steel, through-hardenable for high-carbon bearing rings in harsh environments. Precision tolerances for raceway forming, it fits under tariff item 7304.59.00 as other seamless tubes of alloy steel.
AL-6XN Condenser Tube
Seamless AL-6XN super-austenitic tube for seawater condensers and heat exchangers, offering pitting resistance at high temperatures. Used in power and refining applications where chloride corrosion is a concern.