Alloy 625 Superheater Tube
Seamless Alloy 625 tube for superheaters in power generation boilers, offering exceptional oxidation resistance at elevated temperatures. Used in feedwater heaters and refining furnaces. Classified in 7304.59.20.30 for its heat-resisting steel composition, seamless circular profile, and boiler/superheater suitability.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If not specifically for boilers/heat exchangers
Heat-resisting steel tubes for general high-temp uses (not listed equipment) fall under other provisions.
If threaded or fitted with connectors
Tubes with mechanical fittings or threads are classified as tube fittings rather than plain tubes.
If imported in sets for boiler assembly
Complete sets of tubes for boiler manufacture may classify under boiler parts heading.
Not sure which classification is right?
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Import Tips & Compliance
• Include end-use statements confirming boiler application; ensure compliance with ASME pressure vessel codes; check for quota restrictions on high-nickel alloys
Related Products under HTS 7304.59.20.30
RA333 Furnace Tube
Seamless RA333 heat-resisting steel tube for refining furnaces, enduring carburizing atmospheres and temperatures up to 1800°F. Used in petrochemical heat exchangers. 7304.59.20.30 applies for its alloy steel composition, seamless circular form, and furnace suitability.
310 Stainless Boiler Tube
Seamless 310 stainless steel tube certified heat-resisting for boiler tubes in high-temperature service. Resists scaling in superheaters and feedwater heaters. Fits HTS 7304.59.20.30 as other alloy steel (heat-resisting), seamless, circular, boiler-suitable.
Alloy 20 Feedwater Heater Tube
Seamless Alloy 20 tube for feedwater heaters in power plants, corrosion-resistant in chloride environments at elevated temperatures. Suitable for heat exchangers. Classified 7304.59.20.30 for heat-resisting properties, seamless construction, and specified equipment use.
253MA Heat Exchanger Tube
Seamless 253MA austenitic steel tube for heat exchangers in boilers, with nitrogen-enhanced heat resistance up to 2000°F. Used in refining applications. 7304.59.20.30 due to heat-resisting alloy, circular seamless profile, heat exchanger suitability.
AL-6XN Condenser Tube
Seamless AL-6XN super-austenitic tube for seawater condensers and heat exchangers, offering pitting resistance at high temperatures. For power and refining. Meets 7304.59.20.30 as heat-resisting seamless alloy steel tube for condensers.
Haynes 230 Superheater Tube
Seamless Haynes 230 nickel-chromium alloy tube for gas turbine superheaters and industrial boilers. Exceptional high-temperature strength. 7304.59.20.30 classification for heat-resisting steel, seamless, circular, superheater use.