{
  "$type": "site.standard.document",
  "description": "The invention relates to a double walled metal tube comprising a tubular roll formed metal band having a brazing layer between the metal layers of the tubular roll formed metal band, wherein the brazing layer consists of a copper alloy. According to the invention, the copper alloy is a copper-tin…",
  "path": "/patents/1081386",
  "publishedAt": "2004-12-22T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B21C37/06",
    "HILLE & MUELLER GMBH [DE]"
  ],
  "textContent": "The invention relates to a double walled metal tube comprising a tubular roll formed metal band having a brazing layer between the metal layers of the tubular roll formed metal band, wherein the brazing layer consists of a copper alloy. According to the invention, the copper alloy is a copper-tin alloy, wherein the copper-tin alloy contains 3 - 12 wt% tin. The invention also relates to a metal band for forming such a double walled metal tube and to a metal strip for producing such metal bands, and to a method of coating a metal band and strip.",
  "title": "Double walled metal tube, metal band and strip, and method of coating a metal strip"
}