There are three tool options to consider when drilling large-diameter holes in thick steel: twist drill bits, hole saws and annular cutters. 1. Twist drill bits. Especially in steel thicker than ¼", ...
Epiroc has introduced the Pit Viper 291 blasthole drilling rig. The large diameter, single-pass drill is designed to tackle larger diameter drilling in soft to medium ground conditions. Capable of 11 ...
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