SA-213 T22 Seamless Alloy Boiler Tube
High-temperature seamless tube of 2.25Cr-1Mo alloy steel (SA-213 T22) designed for boiler and superheater service, with OD 11.25-16 inches and wall thickness 0.5-0.75 inches. Classified under 7304.59.80.65 for other seamless alloy steel tubes of circular cross section meeting the specified dimensions. Essential for fossil fuel power generation systems.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If made from non-alloy steel
Carbon steel composition (not alloyed beyond specified limits) shifts to 7304.39 provisions.
If threaded or coupled at both ends
Pipe fittings with threads/couplings classified under Chapter 73 tube/pipe fittings heading.
If for injection molding machine hydraulic lines
Specific machinery end-use may reclassify under Chapter 84 plastics processing equipment parts.
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Import Tips & Compliance
• Require NDT reports (ultrasonic, eddy current) as mandatory for pressure tubing compliance
• Label with heat number and grade; avoid bulk packing confusion with thinner wall tubes under 7304.59.80.30
Related Products under HTS 7304.59.80.65
SA-335 Grade P11 Seamless Alloy Steel Pipe
This seamless pipe made from chromium-molybdenum alloy steel (SA-335 P11 grade) has a circular cross-section with an outside diameter between 285.8 mm and 406.4 mm and wall thickness of 12.7-19 mm. It falls under HTS 7304.59.80.65 as other seamless tubes/pipes of alloy steel, suitable for high-temperature boiler service. Commonly used in power plants for superheater tubes.
SA-369 Grade FPS Alloy Steel Pipe
Forged and bored seamless pipe (SA-369 FPS) from 5Cr-0.5Mo alloy steel for high-pressure fittings, OD 300-400 mm, wall 15 mm nominal. Classified in 7304.59.80.65 for other alloy seamless tubes/pipes. Used in petrochemical reactor vessels and pressure vessels.
17-4PH Stainless Alloy Seamless Pipe
Precipitation-hardening stainless seamless pipe (17-4PH grade) for aerospace ground support equipment, OD 350 mm, 15 mm wall. HTS 7304.59.80.65 covers other alloy steel seamless tubes including PH stainless. High strength-corrosion resistance balance.
API 5LCRA Grade 80 Seamless Line Pipe
Corrosion-resistant alloy seamless pipe (API 5LCRA Gr.80) for sour service oil/gas transport, OD 12-16 inches, wall 0.5-0.75 inches. Meets HTS 7304.59.80.65 as other alloy steel seamless tubes in the specified size range. Designed for H2S environments in petroleum production.
9% Nickel Alloy Steel Seamless Pipe
Cryogenic seamless pipe made from 9%Ni alloy steel for LNG storage/transport, OD 12.5-15.75 inches, 14 mm wall thickness. Falls under HTS 7304.59.80.65 as other alloy steel seamless tubes in specified dimensions. Critical for liquefied gas infrastructure.
SA-106 Grade C with Alloy Addition Pipe
Seamless carbon steel pipe SA-106 Gr.C with controlled alloying elements exceeding de minimis limits, OD 14 inches, 16 mm wall. Classified as alloy steel under 7304.59.80.65 due to alloy content. Used for high-pressure refinery piping.