Inconel 718 Seamless Pipe
High-strength seamless pipes of Inconel 718 high-nickel alloy steel (50-55% nickel), used in gas turbine engine components. Meets 7304.49.00.05 criteria: seamless, circular, stainless high-nickel steel.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If as gas turbine components
Finished engine parts shift to Chapter 84 machinery parts.
If non-circular profiles
Rectangular or square seamless high-nickel tubes go to Chapter 72.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Include aerospace material specs (AMS 5662); critical for high-temp verification
• Avoid importing cut-to-length as parts—declare as tube stock to stay in 7304
• Batch test for precipitation hardening grade to confirm alloy integrity
Related Products under HTS 7304.49.00.05
Incoloy 800 Seamless Pipe
Seamless tubes of Incoloy 800, a high-nickel alloy steel (typically 30-35% nickel), designed for elevated-temperature service in chemical processing. Classified under 7304.49.00.05 due to its seamless construction, circular cross-section, and high-nickel stainless steel composition exceeding standard stainless thresholds.
Hastelloy C-276 Seamless Tube
Seamless circular tubes made from Hastelloy C-276, a nickel-molybdenum-chromium high-nickel alloy steel (over 50% nickel), used in corrosive environments like flue gas desulfurization. Fits 7304.49.00.05 for its seamless, high-nickel stainless steel profile.
Alloy 625 Seamless Pipe
Seamless pipes of Inconel Alloy 625, high-nickel alloy steel (58% min nickel), for aerospace and marine exhaust systems requiring oxidation resistance. Under 7304.49.00.05 as seamless, circular cross-section stainless high-nickel steel.
Carpenter 20Cb-3 Seamless Pipe
Seamless pipes from Carpenter 20Cb-3, high-nickel stainless alloy steel (32-38% nickel), corrosion-resistant for sulfuric acid plants. Classified 7304.49.00.05 for seamless high-nickel stainless circular profile.
Monel 400 Seamless Tube
Seamless tubes from Monel 400, a nickel-copper high-nickel alloy steel (63-70% nickel), ideal for seawater piping. Classified in 7304.49.00.05 for seamless stainless high-nickel construction.
AL-6XN Seamless Tube
Seamless tubes of AL-6XN super-austenitic high-nickel stainless steel (20-23% nickel minimum), for pharmaceutical processing equipment. Falls under 7304.49.00.05 as high-nickel alloy seamless circular tubes.