Carbon Steel Heat Exchanger Tube OD 168mm WT 9mm
Seamless carbon steel tube designed for heat exchangers in petrochemical plants, OD 168 mm (6-inch nominal), wall thickness 9 mm. Fits HTS 7304.39.0036 as seamless nonalloy steel tube with circular cross section, specified OD range, and thin wall. Enhanced for corrosion resistance in heat transfer applications.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If cold-drawn or finished for boiler/heat exchanger use
Specific cold-worked tubes for pressure service have dedicated statistical provisions.
If threaded or with fittings
Tubes with mechanical connections classified as tube fittings under 7307.
If imported as assembled heat exchanger component
Complete heat exchanger units classified as machinery, not individual tubes.
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Import Tips & Compliance
• Specify if plain end or U-bent; U-bends may require different classification if extensively formed
• Include hydrostatic test pressure ratings in documentation for pressure tube verification
• Confirm carbon steel chemistry (C ≤ 0.3%) to maintain nonalloy classification
Related Products under HTS 7304.39.00.36
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Nonalloy Steel Hydraulic Cylinder Tube OD 165mm WT 8mm
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Seamless Steel Structural Pipe OD 140mm WT 11mm
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Seamless Carbon Steel Pressure Piping OD 155mm WT 9.5mm
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