Construction drilling

  1. Construction drilling including:SR28, R28, SR32, R32 thread type.
  2. Drill Bit:Ballistic,Spherical,Trubbnos, diameter:33mm-76mm.
  3. Hex25*108mm Shank end rods,
    SR28(1 1/8”)Hex22mm(7/8”)-12°-Tapered drifter speedrod,
    SR28(1 1/8”)Hex25mm-SR28 Speedrods, SR28(1 1/8”)Hex28mm-SR28 Speedrods,
    R32(1 1/4”)-Hex28mm(1 1/8”)-SR28(1 1/8’‘)Drifter rods
  4. R28,SR28,R32,SR32 Extension rod:R28 (1⅛”) hex rod,Speedrods, Guide Tubes,
  5. Coupling Sleeves:Central stop,Full bridge stop
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