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Angle Grinding Globalspec

hi, i think in 30000rpm the stone may break.Our pipe is 5" dia i already told.And about 12m length.3500+ holes 10mm dia.We cant use honing i think, boz the honing stone may push the burrs into the holes then we need to poke the hole with round file, it will take a long time.Also pull-boring is a boring technic for a long pipes kind products.

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