Mud Drum for Water Tube Boiler
Mud drums collect sediment and sludge from boiler bottom circulation, preventing tube fouling in water-tube steam generators. HTS 8402.90.00 part for vapor generating boilers. Includes cleanout doors and blowdown valves.
Import Duty Rates by Country of Origin
| Origin Country | MFN Rate | Ch.99 Surcharges | Total Effective Rate |
|---|---|---|---|
| ๐จ๐ณChina | 4.3% | +35.0% | 39.3% |
| ๐ฒ๐ฝMexico | 4.3% | +10.0% | 14.3% |
| ๐จ๐ฆCanada | 4.3% | +10.0% | 14.3% |
| ๐ฉ๐ชGermany | 4.3% | +10.0% | 14.3% |
| ๐ฏ๐ตJapan | 4.3% | +10.0% | 14.3% |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If basic pipe fittings collection
Pipe tube fittings not specifically for boilers classified in Chapter 73.
If industrial filtering/sedimentation equipment
Water treatment filtering parts go to Chapter 84 filtering machinery.
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
โข Size according to blowdown rates; include valve specifications; verify corrosion allowance meets water chemistry
Related Products under HTS 8402.90.00
Tube Sheet for Boiler Headers
Forged tube sheets with drilled holes secure boiler tubes in headers for steam/water separation. Critical pressure boundary part under HTS 8402.90.00. High-strength carbon or alloy steel.
Boiler Expansion Joint
Expansion joints accommodate thermal growth between boiler pressure parts and structural steel during steam generation cycles. HTS 8402.90.00 covers these flexible connections. Refractory-lined slip or bellows type.
Boiler Manway Door Assembly
Manway doors provide access for boiler tube inspection and maintenance in steam generating pressure vessels. HTS 8402.90.00 boiler access component. Includes gasket, bolts, and davit assembly.
Boiler Feedwater Pump Impeller
Specialized impellers for multistage feedwater pumps deliver high-pressure water to steam boilers. While pumps may be 8413, boiler-specific impellers fall under HTS 8402.90.00. High-efficiency stainless steel design.
Deaerator Tray Stack
Tray stacks in deaerators remove dissolved oxygen from boiler feedwater, preventing corrosion in steam generating systems. HTS 8402.90.00 covers these water treatment internals. Stainless steel construction.
Boiler Firetube Replacement
A firetube is a critical heat exchanger tube used in fire-tube boilers to transfer heat from combustion gases to water, generating steam. It is classified under HTS 8402.90.00 as a dedicated part of steam generating boilers. These tubes are made from high-temperature resistant alloys to withstand boiler operating conditions.