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i am not a physics expert but a technical man. i encountered a problem in designing a machin for pipe pinching(squeesing) . the pipe has 20 mm diameter outside and 18 mm inside made by galvanized sheet (1.0350) with Re=140-300 N/mm2 yield strength. my machine use 3 pins for squeesing each side of pipe head( 6 pin boath sides) ( together 12 pin for boath heads). the pins are rounded and have 4.5mm diameter. i decided to use 4 hydraulic jack for four direction to push the pins to the pipe(every 3 pins are attached to shaft of a jack).

my question is what power of hydraulic jach should i use?

(please mention the formulas used for solving the problem)

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# Help me for calculate a Hydraulic pomp pressure

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