PUCHING APPARATUS FOR LOW PRESSURE PIPE

A punching apparatus for a low pressure pipe is provided to cut off leakage of gas by opening/shutting a sandwich valve, and prevent damage of pipes and a perforating cutter by permitting the perforating cutter and rods to move in a vertical direction along a rack gear of a guide bar. A punching app...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	KIM, BUB JIN, KIM, MOON JEONG, SUK, BOUNG IN, JI, CHAN HONG, LEE, JANG BUM, KIM, YONG KOO, HONG, SUNG MIN, SUNG, JUNE SIK, JANG, YOUNG SUN, JUNG, WOON HAK, CHO, KI HAING, YOUN, SOON DAE, PARK, JUNG JUN
Format:	Patent
Sprache:	eng
Schlagworte:	BORING CUTTING CUTTING-OUT HAND CUTTING TOOLS MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORATING PERFORMING OPERATIONS PUNCHING SEVERING SEVERING BY MEANS OTHER THAN CUTTING STAMPING-OUT TRANSPORTING TURNING
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