AISI 316L Seamless Stainless Steel Boiler Tube
Seamless tube made from AISI 316L stainless steel, designed with circular cross-section for high-pressure steam boilers in industrial power plants. It meets ASME SA-213 specifications for elevated temperature service, ensuring corrosion resistance and structural integrity under thermal stress. Classified under 7304.49.0045 due to its suitability for boilers and seamless stainless steel construction.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If of iron or non-alloy steel
Changes to non-stainless steel tubes under 7304.41 if material is carbon steel instead of stainless, altering corrosion resistance properties.
If welded rather than seamless
Welded stainless steel tubes for boilers fall under Chapter 73 heading 7306, as seamlessness is key for 7304 classification.
If imported as part of a complete heat exchanger assembly
If supplied as an assembled unit rather than individual tubes, it may classify as a heat exchange part under 8419.
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Import Tips & Compliance
• Obtain material test certificates (MTC) confirming AISI 316L grade and seamless production to verify compliance with HTS 7304.49.00.45
• Ensure documentation includes end-use declaration for boilers or heat exchangers to avoid reclassification to general tubes
Related Products under HTS 7304.49.00.45
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Type 317LMN Boiler Economizer Tube
Seamless Type 317LMN stainless tube for boiler economizers recovering waste heat, with nitrogen-enhanced strength. Circular cross-section for flue gas heat transfer. Classifies under 7304.49.0045 as suitable for boilers despite economizer function.
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2205 Duplex Feedwater Heater Tube
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