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Drilling Rigs Hammers Button Bits For Sale Down The Hole

Mission 50-140 dth hammer bits , water geothermal well drilling button bit.Ql60 203 dth drill bit 152mm-203mm bit diameter optional iso9001 approval.Down the hole hammer.5 inch reverse circulation rc hammer , geological exploration dth drilling system.Good seal effect th10 down the hole hammer long service life smooth stable speed.