ASTM A350 LF2 Alloy Steel Sleeve Union 1-inch
Low-temperature service threaded sleeve union from A350 LF2 nickel-alloy steel for cryogenic piping systems. Classified in HTS 7307.92.3030 for alloy (non-stainless) threaded sleeves, providing impact toughness at sub-zero temperatures.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If carbon steel low-temp variant
Carbon steel (non-alloy) low-temp fittings use 7307.91, distinguished by absence of alloy elements.
If imported with heat exchanger
As assembled parts of pressure vessels/heat exchangers, shifts to Chapter 84 machinery parts.
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Import Tips & Compliance
• Charpy impact test results mandatory for LF2 grade verification
• Avoid describing as 'union' if it risks reclass to specialized connectors
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