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WORKING METHOD FOR THE PRODUCTION OF SCREW-WINDED PIPES AND PIPE PRODUCED THEREFORE
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Corrugated tubing
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PIPING FROM GROOVED PIPE
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Flexible grooved pipe
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Spiral grooved flexible tube mfe
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Perforated pipe and apparatus for making it
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Spiral grooved tube
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Helically seamed corrugated pipe of thin sheet metal.
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Grooved Metal Thin Wall Flexible Tube
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Tube made of thin sheet metal or metal foil
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