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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If other alloy steel, not high-nickel
Standard alloy steel seamless tubes without high-nickel are in 7304.29.
If threaded or fitted with fittings
Tube/pipe fittings or assemblies classified under Chapter 73 fitting headings.
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Import Tips & Compliance
• Use ASTM B444 certification for material specs; mismatches lead to duty adjustments
• Ship in bulk to avoid retail packaging misclassification as finished goods
• Pre-clear with customs on nickel assays—over 50% nickel confirms high-nickel status
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.
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.