Seamless Alloy Steel Boiler Tube 14-inch OD
A seamless tube made from alloy steel with a circular cross-section, outside diameter of 355 mm, and wall thickness of 10 mm, designed for high-pressure steam boilers in industrial power plants. It falls under HTS 7304.59.80.60 due to its seamless construction, alloy steel material, OD between 285.8 mm and 406.4 mm, and thin wall less than 12.7 mm. These tubes withstand extreme temperatures and pressures without welding seams.
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 carbon steel rather than alloy steel
Carbon steel seamless tubes of similar dimensions fall under 7304.39, with potentially lower duties.
If welded instead of seamless
Welded alloy steel pipes shift to Chapter 73 heading 7306, regardless of wall thickness.
If imported as finished boiler components
If pre-fitted for specific boilers, classified by end-use as parts of turbojets/boilers rather than generic tubes.
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Import Tips & Compliance
• Verify chemical composition certificate to confirm alloy steel status and avoid reclassification to carbon steel headings
• Ensure mill test reports document seamless process, OD (285.8-406.4 mm), and wall thickness under 12.7 mm for customs compliance
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