Heavy-Wall Seamless Alloy Steel Cylinder Liner
Seamless alloy steel tube with 139.7 mm OD and 24 mm wall thickness, used as cylinder liners in large diesel engines. Meets 7304.59.80.40 criteria: seamless, alloy steel, circular CS, OD range 114.3-190.5 mm, wall ≥19 mm.
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 material
Non-alloy steel cylinder tubes use parallel subheading 7304.29.
If fully machined to final spec
Completed crankshaft housings shift to Chapter 84 transmission parts.
If threaded or coupled ends
Pipe fittings with threads classify under threaded tube headings.
Not sure which classification is right?
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Import Tips & Compliance
• Certify inner surface honing quality if machined; unfinished tubes stay in 7304
• Distinguish from finished engine parts which may classify under 8409/91
• Declare exact alloy grade (e.g
• 4140, 4340) for duty verification
Related Products under HTS 7304.59.80.40
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