ASTM A214 Welded Boiler Economizer Tube
ASTM A214 standard welded carbon steel tube with ≥1.65 mm walls for economizer sections in boilers, recovering waste heat from flue gases. Nonalloy steel suits low-to-medium pressure service. HTS 7306.30.5010 for boiler-suitable welded tubes.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If seamless carbon steel version
Seamless economizer tubes fall under 7304.31 for cold-drawn seamless.
If alloy steel economizers
Higher alloy content for extreme conditions uses alloy headings.
If imported with welded end fittings
Tubes with significant attachments may classify as structures/parts in 7308.
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Import Tips & Compliance
• Attach ASTM A214 test reports (tensile strength, flattening tests) for classification support
• Distinguish from finned tubes which may classify as heat exchanger parts
• Verify origin marking; Chinese-origin steel faces special duties
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