Nickel-Alloy Seamless Transfer Line Pipe 15.75-inch OD
Seamless pipe of Alloy 800H (Ni-Fe-Cr), 400 mm OD, 9.8 mm wall thickness, for ethylene cracking furnace transfer lines. HTS 7304.59.80.60 covers this 'other alloy steel' seamless tube in the 285.8-406.4 mm OD range with thin walls. Carburization resistance enables high-temperature hydrocarbon service.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If qualifying as stainless steel (Cr>10.5%)
High chrome nickel alloys classify as cold-drawn stainless under 7304.41.
If imported welded
Welding excludes from seamless headings, moving to 7306.50.
If pre-shaped for furnace equipment
Machinery-specific shapes become parts of industrial ovens under 8419.
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Import Tips & Compliance
• Specify nickel >1.5% and chrome content in material test reports for alloy status
• Confirm no cold-work beyond permitted tolerances affecting OD measurement
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