Cold-Rolled TP304 Stainless Steel Superheater Tube
Seamless cold-rolled tube of TP304 stainless steel optimized for superheaters in power generation plants, enduring extreme temperatures and pressures. The cold-reduced process provides smooth finish and tight tolerances ideal for superheater coils. Falls under 7304.41.60.15 for its designated use in superheaters as cold-formed seamless stainless steel.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If not specifically suitable for boilers or heat exchangers
General-purpose cold-drawn stainless tubes without designated high-pressure use go to the residual subheading.
If of alloy steel other than stainless
Similar seamless tubes in non-stainless alloys like chrome-moly are classified under Chapter 72 for steel bars/tubes.
If cold-formed but of iron or non-alloy steel
Non-stainless steel versions shift to different material headings within Chapter 73.
Not sure which classification is right?
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Import Tips & Compliance
• Provide end-user statements confirming superheater application to support classification
• Ensure tubes meet ASME SA-213 standards; include mill test certificates for customs validation
• Avoid pitting by declaring exact cold-rolling reduction percentage to differentiate from hot-finished tubes
Related Products under HTS 7304.41.60.15
Cold-Drawn 316L Stainless Steel Boiler Tube
Seamless cold-drawn tube made from 316L stainless steel, designed specifically for high-pressure steam boilers in industrial applications. Its circular cross-section and precise tolerances ensure resistance to corrosion and thermal stress in boiler environments. Classified under 7304.41.60.15 due to its suitability for use in boilers as a seamless stainless steel tube.
ASTM A249 TP316Ti Boiler Feedwater Heater Tube
Cold-rolled seamless tube per ASTM A249 in TP316Ti stabilized stainless steel for feedwater heaters, resisting intergranular corrosion in high-temperature water systems. Circular profile suitable for cold-forming as defined in chapter wire note. 7304.41.60.15 applies for feedwater heater use in cold-reduced stainless category.
Incoloy 800H Cold-Drawn Superheater Tube
Cold-drawn seamless Incoloy 800H tube (UNS N08811) for high-temperature superheaters in fossil fuel plants, solution-annealed for creep resistance. Though nickel alloy, classified as stainless steel per tariff definitions. 7304.41.60.15 for superheater application.
Cold-Reduced 304H Stainless Refinery Furnace Tube
High-carbon 304H stainless cold-reduced tube for convection sections in oil refinery furnaces, designed for 800-1100°C service. Seamless construction prevents leakage in high-pressure gas streams. HTS 7304.41.60.15 covers refining furnace applications.
TP347HFG Cold-Rolled Boiler Tube
Advanced TP347HFG stainless seamless cold-rolled tube for thick-walled water wall panels in ultra-supercritical boilers. FG grade indicates forged grain structure for superior creep strength. Classified under 7304.41.60.15 for boiler service.
Seamless 310S Stainless Steel Heat Exchanger Tube
Cold-drawn seamless tube in 310S stainless steel grade, engineered for heat exchanger service in chemical processing plants with excellent oxidation resistance. Circular cross-section under 16mm wall allows cold forming per chapter definition. Classified in 7304.41.60.15 for use in heat exchangers as cold-reduced stainless steel tubing.