发明名称 Welding sleeve of thermoplastic material
摘要 The welding sleeve has a coil of a resistance wire forming two heating zones and is arranged near the inner circumference of the sleeve. Each heating zone has a region at the beginning and end in which the coil spacing is less than in the center region.
申请公布号 GB9418952(D0) 申请公布日期 1994.11.09
申请号 GB19940018952 申请日期 1994.09.20
申请人 GEORG FISCHER ROHRLEITUNGSSYSTEME AG 发明人
分类号 F16L47/02;B29C65/34;F16L47/03;H05B3/00;H05B3/20 主分类号 F16L47/02
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