Heavy Duty Carbon Steel Reducer 500mm ID
A concentric reducer fitting made from nonalloy carbon steel for butt welding, with a large end ID of 500 mm tapering to connect differing pipe sizes in industrial water treatment plants. It qualifies for HTS 7307.93.90.40 as an 'other' butt welding fitting of iron/nonalloy steel over 360 mm ID. These are essential for transitioning pipe diameters without welds.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If flanged connection type
Flanged fittings of nonalloy steel are excluded from butt weld and go to 7307.99 other categories.
If alloy steel material (e.g., containing chromium)
Alloy steel butt weld fittings over 360 mm ID use 7307.93.45, distinct from nonalloy.
If part of a gas turbine assembly
Fittings for specific machinery like turbines may classify as parts under Chapter 84 by end use.
Not sure which classification is right?
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Import Tips & Compliance
• Measure and document both inlet/outlet IDs precisely, as reducers must average over 360 mm for this code
• Comply with ASME B16.9 standards; include conformance certs to prevent customs holds
• Avoid pitfall of classifying as 'caps'—ensure functional reduction shape, not end closures
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