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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If not stainless steel grade
Non-stainless alloy steel seamless tubes go to general 'other' category.
If imported as heat exchanger parts
End-use as machinery parts may shift to Chapter 84 tubes/parts.
If under 16mm wall thickness and drill pipe quality
Certain thin-walled seamless stainless tubes classified by wall specs in Chapter 72.
Not sure which classification is right?
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Import Tips & Compliance
• Provide alloy-specific datasheets; Hastelloy's unique composition demands proof of high-nickel status
• Avoid common pitfall of declaring as generic stainless—customs audits often reclassify without documentation
• For heat exchanger use, bundle with pressure vessel certification to prevent end-use disputes
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.
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.
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.
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.