Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters, whether or not cold-drawn
Other tubes, pipes and hollow profiles (for example, open seamed or welded, riveted or similarly closed), of iron or steel: > Other, welded, of circular cross section, of other alloy steel: > Having a wall thickness of 1.65 mm or more: > Other > Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters, whether or not cold-drawn
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Effective with respect to entries on or after September 27, 2024, articles the product of China, as provided for in subdivision (b) of U.S. note 31 to this subchapter
Products classified under HTS 7306.50.50.10
Welded Alloy Steel Boiler Tube SA-213 TP304
This is a welded tube of circular cross section made from TP304 stainless alloy steel with wall thickness over 1.65 mm, specifically designed for use in high-pressure steam boilers. It meets ASME SA-213 standards for boiler and superheater service, ensuring resistance to corrosion and high temperatures. Classified under 7306.50.5010 due to its welded construction and suitability for boilers.
Cold-Drawn Welded TP316L Heat Exchanger Tube
Cold-drawn welded tube from TP316L alloy steel, circular cross-section, wall thickness exceeding 1.65 mm, engineered for heat exchanger applications in chemical processing plants. Its molybdenum content provides superior corrosion resistance in harsh environments. Fits 7306.50.5010 as welded alloy steel tube suitable for heat exchangers.
Alloy Steel Superheater Tube ASTM A312 TP310S
Welded circular tube of TP310S alloy steel per ASTM A312, wall thickness 1.65 mm or more, optimized for superheater sections in fossil fuel power plants. High-temperature oxidation resistance makes it ideal for steam superheating. Covered by 7306.50.5010 for welded alloy tubes in superheaters.
Duplex 2205 Welded Condenser Tube
Welded tube from duplex 2205 alloy steel, circular profile with wall ≥1.65 mm, designed for condenser tubes in power generation and desalination plants. Offers excellent pitting and crevice corrosion resistance in seawater cooling. Qualifies under 7306.50.5010 for condenser use.
Incoloy 800H Welded Feedwater Heater Tube
Welded circular tube of Incoloy 800H nickel-iron-chromium alloy steel, wall thickness 1.65 mm+, for feedwater heaters in thermal power stations. Provides creep resistance at elevated temperatures. HTS 7306.50.5010 applies to such welded alloy tubes for feedwater heaters.
Cold-Drawn Alloy Superheater Tube TP347H
Cold-drawn welded TP347H stabilized alloy steel tube, circular with thick walls ≥1.65 mm, for high-temperature superheaters resisting weld decay. Used in utility boilers. 7306.50.5010 for cold-drawn superheater tubes.
Welded Hastelloy C-276 Heat Exchanger Tube
Welded Hastelloy C-276 nickel-molybdenum-chromium alloy tube for severe corrosive heat exchangers in flue gas desulfurization. Circular cross-section, wall >1.65 mm. Although nickel-based, classified as alloy steel tube under 7306.50.5010 for heat exchanger use.
Alloy Steel Refining Furnace Tube 1.4841
Welded 1.4841 alloy steel tube, circular cross-section over 1.65 mm wall, for petrochemical refining furnaces handling corrosive gases. Heat-resistant to carburizing atmospheres. Fits 7306.50.5010 criteria for refining furnace tubes.