| 摘要 |
IN A PROCESS FOR CONTINUOUS PRODUCTION OF LONGITUDINALLY WELDED METAL TUBING, IN WHICH A METAL STRIP (2) IS WITHDRAWN FROM A STRIP SUPPLY, GRADUALLY SHAPED INTO A TUBING (4) WITH AN OPEN LONGITUDINAL SLIT, AND THE LONGITUDINAL SLIT IS SEALED BY SOLDERING OR WELDING, A LUBRICANT IS INTRODUCED INTO THE OPEN SLIT TUBING (4) BEFORE SEALING. (FIGURE. 1)
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