T51 Retrac Bit Suppliers & Manufacturers - Factory
8 行 · Button Bit Face & Skirt Design . Face & Skirt Design . Application . Flat Face: For Drilling in medium to hard and abrasive rock Drop Center Face:For drilling in medium hard, maximum hole deviation control Normal Skirt: For drilling in very hard and very abrasive rock formation which is compact Retrac Skirt:; For drilling in loose and broken or fissured rock where it is difficult to retrac the ...
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