Of refined copper:
Part of: 7411 — Copper tubes and pipes:
087593 · 1991-04-01 — Copper Tubes; Pipes; Hollow Profiles; Rifled; Ridged; Grooved; Threaded; Finned; Gilled; Enhanced; Heat Transfer
Your request dated June 29, 1990, on behalf of Marubeni America Corporation, for a classification ruling on a certain tubular copper product has been referred by the Regional Commissioner of Customs, New York, to Customs Headquarters for a reply. FACTS: The merchandise is described by the importer as Thermofin seamless copper "tube" of refined copper. The product has approximately 50 to 65 grooves which run helically throughout the inner surface of the tube. The grooves are approximately .15 to .3 mm in depth. The outer diameter of the tube is approximately 3/8". The tube is used in heat…
087406 · 1991-04-01 — Copper Tubes; Pipes; Hollow Profiles; Rifled; Ridged; Grooved; Threaded; Finned; Gilled; Enhanced; Heat Transfer
Your request dated May 30, 1990, on behalf of Sumitomo Corporation of America, for a classification ruling on a certain tubular copper product has been referred by the Regional Commissioner of Customs, New York, to Customs Headquarters for a reply. FACTS: The merchandise is described by the importer as Sumitomo enhanced seamless copper "tubes". The product is of refined copper and has approximately 50 to 65 grooves which run helically throughout the inner surface of the tube. The grooves are approximately .15 to .3 mm in depth or height. The outer diameter of the tube is approximately 3/8".…
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