ETERNAL company could supply Raise boring tool, including drill pipe , reamer head ,cutters etc .They could be applicated on SANDVIK , Atlas Copco ,the Robbins machines etc .ETERNAL's drill pipe choose AISI 4330V (MOD) high strength forging material ,their strength could reach 1050 MPA after heat treatment . Reamer head choose high strength steel plate welding ,top plate choose wearing plate , surface hardness could be HRC50 ,size could be upto 6000mm .
