X20CrMoWV11.1 Seamless Header Tube
Seamless tube of X20CrMoWV11.1 creep-resistant alloy steel for steam headers, 110 mm OD and 12 mm wall. HTS 7304.59.80.20 applies to this other alloy steel seamless tube within size limits. Used in supercritical power boilers.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If rectangular/square profile
Non-circular hollow profiles classify under 7304.39.
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Import Tips & Compliance
• Creep-strength alloy requires detailed heat analysis certificate
• Header tube remains 7304 until welded into header assembly
• Distinguish from cast iron (excluded) and verify no cast features
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