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 iron or nonalloy 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 7306.30.50.10
Welded Carbon Steel Boiler Tube ASTM A178
This welded carbon steel tube with circular cross section and wall thickness over 1.65 mm is specifically designed for use in fire-tube boilers to convey hot gases or water. It meets ASTM A178 standards for low-carbon steel suitable for high-pressure boiler applications. Classified under HTS 7306.30.5010 due to its welded construction and explicit suitability for boilers.
Cold-Drawn Welded Steel Superheater Tube
Cold-drawn welded tube of nonalloy steel with wall thickness exceeding 1.65 mm, engineered for superheater sections in steam boilers to handle high-temperature steam. Its circular cross-section and construction suit elevated pressure environments. Fits HTS 7306.30.5010 as welded, cold-drawn tube for superheaters.
Welded Nonalloy Steel Heat Exchanger Tube
Welded circular tube from nonalloy steel, wall thickness 1.65 mm or greater, designed for shell-and-tube heat exchangers in industrial processes. Provides efficient heat transfer between fluids under pressure. HTS 7306.30.5010 applies due to welded construction and suitability for heat exchangers.
Carbon Steel Condenser Service Tube
Welded carbon steel tube with thick walls (≥1.65 mm) and circular profile for use in surface condensers of power plants, facilitating steam condensation. Nonalloy steel construction withstands corrosive condensate environments. Matches HTS 7306.30.5010 for condenser-suitable welded tubes.
Heavy Wall Welded Refinery Furnace Tube
Welded nonalloy steel tube, circular cross-section with wall ≥1.65 mm, for process furnace tubes in oil refineries handling high-temperature petrochemical reactions. Resists thermal stress in cracking furnaces. HTS 7306.30.5010 due to refinery furnace suitability.
Cold Drawn Feedwater Heater Tube
Cold-drawn welded tube of nonalloy steel, wall thickness over 1.65 mm, for feedwater heaters in steam cycles to preheat boiler feedwater. Circular design optimizes heat transfer. Classifies in HTS 7306.30.5010 for feedwater heater use.
ASTM A214 Welded Boiler Economizer Tube
ASTM A214 standard welded carbon steel tube with ≥1.65 mm walls for economizer sections in boilers, recovering waste heat from flue gases. Nonalloy steel suits low-to-medium pressure service. HTS 7306.30.5010 for boiler-suitable welded tubes.
Thick-Wall Welded Pressure Exchanger Tube
Welded nonalloy steel tube, circular with wall thickness ≥1.65 mm, for pressure recovery heat exchangers in desalination plants. Handles high-pressure differentials. Fits HTS 7306.30.5010 as heat exchanger suitable.