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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If for general structural or line pipe use
Without boiler/heat exchanger certification, it falls under other non-boiler seamless tubes.
If electric resistance welded (ERW)
Welding method changes from seamless (7304) to welded (7306) headings entirely.
If threaded or fitted with couplings
Added fittings for assembly classify as tube fittings under 7307, not plain tubes.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Include API 5L inspection reports proving seamless integrity; welded equivalents are common misclassifications
• Declare end-use in heat exchangers via buyer contracts to justify the specific subheading
• Watch for anti-dumping duties on certain steel origins; pre-check country-specific tariffs
Related Products 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.
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.