ASTM A691 1-1/4Cr Seamless Pipe
Seamless alloy steel pipe per ASTM A691 with 1.25% chromium content, 260 mm OD, and 16 mm wall thickness for elevated-temperature service. It matches HTS 7304.59.80.50 exactly as other seamless alloy steel tubes/pipes with circular cross-section in the defined size parameters.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If wall thickness under 12.7 mm
Thinner walls classify in 7304.59.10; tariff explicitly splits by wall thickness within the OD range.
If considered semi-finished hollow bar
Hollow bars not meeting pipe/tube function criteria go to 7228 for alloy steel bars/profiles.
If imported as steam generating boiler parts
Specific boiler components classify under 8402, principal use determines heading over material form.
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Import Tips & Compliance
• Label with precise ASTM grade and chemical analysis to distinguish from carbon steel equivalents
• Use non-destructive testing reports (ultrasonic) to confirm seamless integrity during customs valuation
• Declare as individual lengths, not coiled, to stay in tubes/pipes vs. 7304.29 for coiled products
Related Products under HTS 7304.59.80.50
SA-335 Grade P11 Seamless Alloy Steel Pipe
This seamless pipe made from chromium-molybdenum alloy steel (SA-335 P11 grade) has an outside diameter of 250 mm and wall thickness of 15 mm, designed for high-temperature and high-pressure applications. It falls under HTS 7304.59.80.50 due to its circular cross-section, alloy steel composition, seamless construction, and specified dimensions exceeding 190.5 mm OD with 12.7-19 mm wall thickness.
API 5L X65 Seamless Alloy Line Pipe
Heavy-walled seamless pipe conforming to API 5L X65 specifications, with 220 mm OD and 14 mm wall thickness, used for oil and gas transmission. Classified under HTS 7304.59.80.50 for its seamless alloy steel construction, circular profile, and precise OD/wall dimensions in the specified range.
SA-213 TP304H Seamless Alloy Boiler Tube
High-temperature seamless tube of 304H austenitic alloy steel, 200 mm OD with 13.5 mm wall, for superheater applications. Falls under HTS 7304.59.80.50 as 'other' seamless alloy steel pipes/tubes meeting the circular, size-specific criteria.
9% Nickel Alloy Steel Seamless Pipe
Seamless pipe of 9% nickel alloy steel for LNG cryogenic service, 240 mm OD and 17 mm wall thickness. Precisely classified in HTS 7304.59.80.50 for its other alloy steel seamless form, circular section, and heavy wall within 190.5-285.8 mm OD range.
Grade F22 Chromium-Moly Seamless Pipe
ASTM A335 P22 (F22) grade seamless pipe with 2.25% chromium and 1% molybdenum, 270 mm OD, 14.5 mm wall for refinery hydrocrackers. HTS 7304.59.80.50 applies to this other alloy steel seamless product matching all dimensional and form criteria.
17-4 PH Stainless Alloy Seamless Tube
Precipitation-hardening 17-4 PH stainless alloy seamless tube, 210 mm OD with 15.2 mm wall for aerospace hydraulic lines. Classified under HTS 7304.59.80.50 as seamless circular alloy steel tube in the specified heavy-wall, large-diameter range.