Having an outside diameter exceeding 285.8 mm
Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: > Other, of circular cross section, of iron or nonalloy steel: > Other > Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters: > Having an outside diameter exceeding 285.8 mm
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 7304.39.00.08
Refinery Cracking Furnace Tube
Large seamless non-alloy tube for ethylene cracking furnaces, OD >285.8 mm. HTS 7304.39.0008 via refining furnace provision.
Boiler Economizer Seamless Tube
Seamless tube >285.8 mm for boiler economizers (feedwater heaters). Matches 7304.39.0008 specs fully.
Steel Superheater Coils Pipe
Straight seamless non-alloy pipe >285.8 mm OD for superheater coils. 7304.39.0008 classification.
Seamless Boiler Tube ASTM A106 Grade B
This seamless carbon steel tube is designed for high-pressure boiler applications, featuring an outside diameter over 285.8 mm and circular cross-section. It falls under HTS 7304.39.0008 due to its seamless construction from non-alloy steel, suitability for boilers, and large diameter exceeding 11.25 inches. Commonly used in power plants for steam generation.
Large Diameter Superheater Tube SA-213 T11
Seamless tube from non-alloy steel for superheaters in industrial boilers, with OD exceeding 285.8 mm. Classified under 7304.39.0008 for its circular cross-section, seamless iron/non-alloy steel makeup, and explicit suitability for superheaters. Ideal for high-temperature steam applications in energy production.
Heat Exchanger Seamless Pipe API 5L X52
High-strength seamless non-alloy steel pipe with OD over 285.8 mm, engineered for heat exchangers in refining processes. Meets HTS 7304.39.0008 criteria: seamless, circular, iron/non-alloy steel, and suitable for heat exchangers/condensers. Used in petrochemical plants for efficient heat transfer.
Condenser Tube for Feedwater Heaters
Seamless carbon steel tube exceeding 285.8 mm OD, optimized for condensers and feedwater heaters in power generation. Fits 7304.39.0008 as a large-diameter, circular cross-section seamless product of non-alloy steel designated for those specific thermal applications.
Refining Furnace Seamless Steel Tube
Extra-large OD (>285.8 mm) seamless non-alloy steel tube for refining furnace applications, ensuring durability under extreme heat. Classified in 7304.39.0008 for seamless iron/non-alloy steel construction, circular profile, and explicit refining furnace suitability.
High-Pressure Boiler Seamless Pipe Grade P11
Seamless non-alloy steel pipe with OD >285.8 mm for high-pressure boilers and superheaters. Meets all criteria for HTS 7304.39.0008: iron/non-alloy, seamless, circular, large diameter, and boiler-suited.
ASTM A192 Boiler Tube Large Diameter
ASTM A192 spec seamless carbon steel tube over 285.8 mm OD for boiler tubes in steam systems. Precisely matches 7304.39.0008 for non-alloy seamless pipes suitable for boilers with large circular cross-section.
Feedwater Heater Seamless Carbon Steel Pipe
Carbon steel seamless pipe >285.8 mm OD designed for feedwater heaters in thermal power plants. Classed under 7304.39.0008 due to seamless non-alloy steel, large diameter, and condenser/heater suitability.
Superheater Seamless Tube for Refineries
Non-alloy seamless tube exceeding 285.8 mm OD for refinery superheaters. HTS 7304.39.0008 applies for its circular seamless profile and designated superheater use.
Large OD Heat Recovery Boiler Tube
Seamless non-alloy steel tube >285.8 mm for heat recovery boilers in waste-to-energy plants. Fits 7304.39.0008 perfectly as boiler-suitable large-diameter tube.
Condenser Service Seamless Pipe
Seamless carbon steel pipe over 285.8 mm OD for power plant condensers. 7304.39.0008 for seamless, large OD, condenser suitability.