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.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If for oil/gas drilling applications
Drill pipe or casing use shifts to specific petroleum subheadings.
If for longitudinally submerged arc welded
Different welding excludes from seamless category into 7305.
If general mechanical tubing not for thermal equipment
Absence of boiler/furnace designation places it in other seamless tubes.
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Import Tips & Compliance
• Reference ASTM A335 or equivalent for furnace-grade specs in entry docs
• Avoid classifying as drill pipe (7304.22) by proving thermal not drilling end-use
• Galvanized versions may require separate declaration under coating provisions
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.
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.