Down The Hole DTH Hammer for Hard Rock water well Drilling 4'' COP44 / DHD 340 / QL 40 Shank Advantages: 1. High quality raw material, with premium hardened procedures for long life. 2. Full ...View More
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Forging Process Down The Hole DTH Hammer for Hard Rock Water Well Drilling 4 prime prime Cop44 / DHD 340 / Ql 40 Shank