Re-forming tubes or rods

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Re-forming shaped glass (re-forming fibres or filaments C03B37/14) > Re-forming tubes or rods

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• C03B 23/043 Heating devices specially adapted for re-forming tubes or rods in general, e.g. burners
• C03B 23/045 Tools or apparatus specially adapted for re-forming tubes or rods in general, e.g. glass lathes, chucks (C03B23/043 takes precedence)
• C03B 23/047 by drawing ( , C03B37/025 takes precedence)
• C03B 23/049 by pressing (C03B21/04 , C03B23/26 take precedence)
• C03B 23/051 by gravity, e.g. sagging
• C03B 23/053 by centrifuging ( , C03B37/04 takes precedence)
• C03B 23/055 by rolling
• C03B 23/057 by fusing, e.g. for flame sealing (C03B9/42, C03B21/06 , C03B33/08 take precedence)
• C03B 23/06 by bending
• C03B 23/07 by blowing, e.g. for making electric bulbs
• C03B 23/08 to exact dimensions, e.g. calibrating
• C03B 23/09 Reshaping the ends, e.g. as grooves, threads or mouths
• C03B 23/11 Reshaping by drawing without blowing, in combination with separating, e.g. for making ampoules
• C03B 23/13 Reshaping combined with uniting or heat sealing, e.g. for making vacuum bottles