A process for making a sleeve for a plastic tube and a core mold used in the method
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Guide hole for supporting the pin in a resistance wire
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Injection moulding mould for the manufacture of couplings between plastic pipes
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Method and arrangement for supporting the ends of a resistance wire in the manufacture of plastic pipe joint parts intended to be heat welded with electric current
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Device for the formation of interior boxes exiting in tubes and exchanges of plastic tubes
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A device for forming internal grooves in plastic pipes and pipe portions
