Welded 304H Stainless Superheater Tube
High-temperature resistant welded 304H stainless steel tubes with thick walls (≥1.65 mm) for superheater sections in power plant boilers. The stabilized composition prevents carbide precipitation during prolonged heat exposure. HTS 7306.40.50.15 applies to these welded stainless tubes designated for superheaters.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If seamless high-temperature variants
Seamless superheater tubes classify under 7304.41 for cold-drawn seamless stainless tubes.
If not specifically for listed high-pressure equipment
General purpose welded stainless tubes fall into residual 'other' provisions outside equipment-specific suffixes.
If imported with boiler fittings as assembled parts
Tube sections with attached fittings may classify as parts of steam boilers under 8402.
Not sure which classification is right?
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Import Tips & Compliance
• Include engineering specifications confirming suitability for superheater service conditions
• Avoid common pitfall of misdeclaring as condenser tubing, which has different statistical reporting
• Ensure proper heat treatment certification to meet pressure vessel code requirements like ASME
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