Superheater Header Manifold

Forged steel manifold distributing superheated steam through parallel circuits in boiler superheaters, equalizing flow and pressure. HTS 8404.90.00.00 as auxiliary plant parts for boilers. High-pressure design for power generation.

Import Duty Rates by Country of Origin

Origin CountryMFN RateCh.99 SurchargesTotal Effective Rate
🇨🇳China3.5%+35.0%38.5%
🇲🇽Mexico3.5%+10.0%13.5%
🇨🇦Canada3.5%+10.0%13.5%
🇩🇪Germany3.5%+10.0%13.5%
🇯🇵Japan3.5%+10.0%13.5%

Alternative Classifications

This product could be classified differently depending on its characteristics or intended use.

7307.19.30Higher: 40.6% vs 38.5%

If welded stainless pipe fittings

Fittings not specifically designed for superheaters classify as pipe connections in Chapter 73.

Not sure which classification is right?

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Import Tips & Compliance

NDT reports (RT/UT) essential for forged components; missing docs cause redelivery

Declare internal diameter and wall thickness precisely

Preferential tariff eligibility requires specific alloy content verification

Related Products under HTS 8404.90.00.00

Economizer Tube Bundle

A heat exchanger assembly consisting of finned tubes designed to recover waste heat from flue gases in boiler systems, preheating feedwater to improve efficiency. It is classified under HTS 8404.90.00.00 as a part of auxiliary plant for boilers of headings 8402 or 8403. This component enhances overall thermal performance in steam power units.

Superheater Coil Assembly

Coiled high-temperature alloy tubes that superheat saturated steam from boilers to increase energy content and efficiency in power generation. Classified as parts under HTS 8404.90.00.00 for auxiliary plant used with boilers of 8402 or 8403. Essential for turbine performance in steam power units.

Soot Blower Element

Retractable lance or rotary assembly with nozzles that inject steam or air to dislodge soot from boiler tubes, maintaining heat transfer efficiency. Falls under HTS 8404.90.00.00 as parts of auxiliary plant like soot removers for 8402/8403 boilers. Critical for preventing efficiency loss in fossil fuel plants.

Condenser Tube Sheet

Thick forged plate with precision-drilled holes to hold condenser tubes in steam power units, facilitating heat exchange for vapor condensation. Classified under HTS 8404.90.00.00 as parts of condensers for vapor power units. Used in nuclear and fossil power plants for efficiency.

Gas Recoverer Baffle Assembly

Perforated steel baffles directing flue gas flow through heat recovery surfaces in boiler auxiliary systems, maximizing energy extraction. Under HTS 8404.90.00.00 as parts of gas recoverers for 8402/8403 boilers. Improves waste heat utilization in industrial plants.

Steam Condenser Shell Section

Cylindrical pressure vessel section housing tube bundles in surface condensers for steam power units, designed to withstand vacuum conditions. HTS 8404.90.00.00 covers it as parts of condensers. Vital for Rankine cycle efficiency.