TOP HAMMER ROCK DRILLING TOOLS -
2021-8-13u2002·u20028 Sandvik Top Hammer Rock Drilling ToolsSandvik Top Hammer Rock Drilling Tools Sandvik Top Hammer Rock Drilling Tools 9 DUAL PROPERTY GRADES DP55 has wear resistance similar to our standard grades, but offers greater toughness. It is especially suited to large ballistic inserts, accommodating the higher loads the insert may be exposed to due to a
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