Monel 400 Cold-Rolled Seamless Pipe

Monel 400 seamless pipes, cold-rolled from high-nickel copper alloy steel (~67% nickel), are used in marine engineering for saltwater resistance. Circular cross-section, seamless, and cold-reduced per HTS 7304.51.50.05 for high-nickel alloy steel tubes. Suitable for valves and pumps in corrosive seawater.

Import Duty Rates by Country of Origin

Origin CountryMFN RateCh.99 SurchargesTotal Effective Rate
🇨🇳ChinaFree+35.0%35%
🇲🇽MexicoFree+10.0%10%
🇨🇦CanadaFree+10.0%10%
🇩🇪GermanyFree+10.0%10%
🇯🇵JapanFree+10.0%10%

Alternative Classifications

This product could be classified differently depending on its characteristics or intended use.

7407Lower: 11.6% vs 35%

If copper-nickel content dominates over steel base

High copper alloys may classify under Chapter 74 copper tubes if not predominantly steel.

7306.40Lower: 10% vs 35%

If welded construction

Welded seamless-appearing pipes shift to 7306 for other alloy steel tubes.

Not sure which classification is right?

Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.

Import Tips & Compliance

Provide UNS N04400 designation and composition certs; copper content can confuse with Chapter 74

Ensure no welds visible; X-ray reports help prove seamless status

Related Products under HTS 7304.51.50.05

Incoloy 825 Seamless Cold-Drawn Tube

Incoloy 825 is a high-nickel alloy steel (Ni-Fe-Cr alloy with >38% nickel) used for seamless cold-drawn tubes in corrosive environments like chemical processing. These tubes have a circular cross-section, are cold-rolled for precision, and fall under HTS 7304.51.50.05 due to their high-nickel composition and seamless construction. They are ideal for heat exchangers and piping in harsh industrial settings.

Greek Ascoloy Cold-Rolled Seamless Pipe

Greek Ascoloy high-nickel austentic alloy cold-rolled pipe for springs. HTS 7304.51.50.05.

Hastelloy C-276 Cold-Rolled Seamless Pipe

Hastelloy C-276 seamless pipes are cold-rolled from high-nickel alloy steel (Ni-Mo-Cr with ~57% nickel) for extreme corrosion resistance in flue gas desulfurization. These circular cross-section hollow profiles are seamless and cold-reduced, qualifying under HTS 7304.51.50.05 for high-nickel alloy steel. Commonly used in pollution control and marine applications.

Inconel 718 Cold-Drawn Tube

Inconel 718 high-nickel alloy (~52% nickel) cold-drawn seamless tubes for oil & gas downhole tools and turbine components. These cold-rolled circular hollow profiles classify under HTS 7304.51.50.05 as seamless high-nickel steel pipes. Provide superior strength at cryogenic temperatures.

Alloy 20 Cold-Rolled Seamless Tube

Alloy 20 (Carpenter 20) high-nickel (~32% nickel) cold-rolled seamless tubes for sulfuric acid handling in chemical plants. Seamless, circular cross-section cold-reduced pipes under HTS 7304.51.50.05 for high-nickel alloy steel. Resist pitting and crevice corrosion.

Hastelloy X Cold-Drawn Pipe

Hastelloy X seamless cold-drawn pipes from high-nickel (~47% nickel) alloy steel for gas turbine combustion zones. Cold-rolled circular profiles per HTS 7304.51.50.05. High-temperature oxidation resistance.