Alloy Steel Superheater Tube ASTM A312 TP310S
Welded circular tube of TP310S alloy steel per ASTM A312, wall thickness 1.65 mm or more, optimized for superheater sections in fossil fuel power plants. High-temperature oxidation resistance makes it ideal for steam superheating. Covered by 7306.50.5010 for welded alloy tubes in superheaters.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If of cold-formed non-welded wire per chapter note
Chapter 72 covers cold-formed wire products ≤16mm dimension if not welded tubes.
If of different alloy steel types like high-strength low-alloy
Specific alloy compositions direct to 7306.30 for welded circular tubes over 1.65 mm.
If imported solely as boiler parts, not standalone tubes
Parts of steam boilers are classified in 8402 if presented as such, not separate tubes.
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Import Tips & Compliance
• ASME or ASTM certification mandatory; lack thereof leads to general tube classification
• Specify 'for superheater service' in commercial invoice to support tariff shift
• Avoid bundling with dissimilar tubes; mixed shipments complicate verification
Related Products under HTS 7306.50.50.10
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