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AU7897094A
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An improved combination counter rotating packerhead and vibrator assembly and method of operating thereof
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US5433523A
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Vibrators
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Combination counter rotating packerhead and vibrator assembly and method of operation thereof
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Cage positioner
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Apparatus for making concrete pipe
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Machine for making concrete pipes
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Apparatus for making lined pipe
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Long-wear packerhead segment
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Packerhead assembly
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Machine for making concrete pipes
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Method of forming lined pipe
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CA1320337C
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Vibrator type concrete pipe making machines having combined lubrication and cooling system and method of operation thereof
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US4861252A
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Vibrator type concrete pipe making machines having combined lubrication and cooling system
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US4540539A
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Method and apparatus for production of concrete pipe by the packerhead method
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