Seamless Carbon Steel Boiler Tube
A seamless tube made from nonalloy steel with a wall thickness exceeding 4 mm, designed for high-pressure boiler applications in industrial settings. It falls under HTS 7304.90.10.00 as it is a seamless hollow profile of iron or nonalloy steel with the specified wall thickness, suitable for transporting fluids or gases under pressure.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If made of stainless steel
Stainless steel composition shifts classification to alloy steel subheadings in 7304.31.
If welded rather than seamless
Welded construction, even with thick walls, falls under Chapter 73 heading 7306 for welded pipes.
If wall thickness under 4 mm
Thinner walls classify under the 'other' subheading 7304.90.50 for seamless tubes.
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Import Tips & Compliance
• Verify seamless construction via mill test certificates to avoid misclassification as welded pipes under 7306
• Ensure wall thickness documentation exceeds 4 mm; common pitfall is measurement discrepancies leading to reclassification
• Comply with ASME standards for boiler tubes; provide material composition certs proving nonalloy steel content
Related Products under HTS 7304.90.10.00
Thick Seamless Steel Roller Tube
Heavy-walled (4 mm+) seamless nonalloy steel tube for conveyor rollers and industrial machinery. HTS 7304.90.10.00 for such mechanical hollow profiles.
Nonalloy Steel Seamless Torsion Bar Tube
Seamless thick-wall tube of nonalloy steel for vehicle suspension torsion bars. Classified HTS 7304.90.10.00 as mechanical seamless profile.
Heavy Seamless Steel Chimney Liner
Seamless nonalloy steel liner tube with 4 mm+ walls for industrial chimney stacks. HTS 7304.90.10.00 for thick seamless tubes.
Nonalloy Steel Seamless Line Pipe
Heavy-walled seamless pipe of nonalloy steel, wall thickness over 4 mm, used for oil and gas transmission lines. Classified under HTS 7304.90.10.00 due to its seamless manufacture from iron or nonalloy steel and thick walls for high-strength applications.
Seamless Nonalloy Steel Structural Pipe
Seamless pipe from nonalloy steel with walls thicker than 4 mm, employed in construction for load-bearing columns and supports. Falls under HTS 7304.90.10.00 for its seamless production and material specs in heavy-duty hollow profiles.
Thick-Wall Seamless Steel Pressure Pipe
Nonalloy steel seamless pipe designed for high-pressure fluid transport, with wall thickness of 4 mm or greater. Classified in HTS 7304.90.10.00 as other seamless tubes/pipes of iron or nonalloy steel meeting the thickness requirement.