DDD-EI :  Deep double tube drills with external 4 start thread connection and indexable inserts. Each item represents a diameter range. For a specific head diameter, an order form should be filled out.  
 
 
DEEPDRILL Drilling COOLANT
  Designation D
min		 D
max
L
d
T
TsOuter tube designation
TsiInner tube designation
  DDD-EI 25.00-26.40  25.00  26.40  65.00  21.00  19.0  TDO-I3  TDI-N3
  DDD-EI 26.41-28.70  26.41  28.70  70.00  23.50  21.0  TDO-I4  TDI-N4
  DDD-EI 28.71-31.00  28.71  31.00  70.00  25.50  24.0  TDO-I5  TDI-N5
  DDD-EI 31.01-33.30  31.01  33.30  70.00  28.00  26.0  TDO-I6  TDI-N6
  DDD-EI 33.31-36.20  33.31  36.20  80.00  30.00  28.0  TDO-I7  TDI-N7
  DDD-EI 36.21-38.40  36.21  38.40  80.00  33.00  30.0  TDO-I8  TDI-N8
  DDD-EI 38.41-39.60  38.41  39.60  80.00  33.00  30.0  TDO-I8  TDI-N8
  DDD-EI 39.61-41.80  39.61  41.80  80.00  36.00  32.0  TDO-I9  TDI-N9
  DDD-EI 41.81-43.00  41.81  43.00  80.00  36.00  32.0  TDO-I9  TDI-N9
  DDD-EI 43.01-45.60  43.01  45.60  90.00  39.00  36.0  TDO-I10  TDI-N10
  DDD-EI 45.61-47.00  45.61  47.00  90.00  39.00  36.0  TDO-I10  TDI-N10
  DDD-EI 47.01-51.70  47.01  51.70  100.00  43.00  41.0  TDO-I11  TDI-N11
  DDD-EI 51.71-53.20  51.71  53.20  100.00  47.00  46.0  TDO-I12  TDI-N12

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