description:The welded gun drill consists of a drill bit, a drill rod and a drill shank. In deep hole drilling, the drill bit is a consumable. When the drill bit is completely worn out, the drill rod and drill shank can still be used. In order to save costs, a new on
Online message National Advisory Hotline18688404766/15017090036
The welded gun drill consists of a drill bit, a drill rod and a drill shank. In deep hole drilling, the drill bit is a consumable. When the drill bit is completely worn out, the drill rod and drill shank can still be used. In order to save costs, a new on