Machinery containing brazed aluminum plate-fin heat exchangers
Part of: 841960 — Machinery for liquefying air or other gases:
L88608 · 2005-11-23 — The tariff classification of an air liquefying cold box
The merchandise in question is machinery consisting principally of distillation columns, brazed aluminum plate-fin heat exchangers, and a variety of other cold box components. The cold box functions to separate oxygen, nitrogen, argon and other gas mixtures from air using the Linde air liquefaction process. The components are all packaged together in one shipment in a large, insulated steel structure which, when assembled, is nearly 120 feet in height. In operation, air is compressed, freed of vapor, dust and carbon dioxide and is refrigerated to very low temperatures. It is compressed to a…
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