• Air Leg Rock DrillThis medium heavy duty & air flushed machine is capable of drilling 27 to 40 mm diameter holes with 22 mm hexagonal drill steels upto a depth of 6 meters.
  • Chipping Hammers The compact and slim design of our Chipping Hammers makes it highly suitable for digging, chipping, making channels and holes in concrete or any horizontal and upright application.
  • Paving BreakersIMT offers high productive, reliable and versatile pneumatic breakers suitable from light chipping to tough demolition medium jobs. We have the right breaker at hand with the most powerful in its class.
  • responsive sliderRivet Buster Chipping Hammers are smaller lightweight tools mostly used for concrete removal and demolition but can be used in various other applications
  • Rock Drill - Medium WeightOur heavy duty, hard hitting Rock drills feature high blow rate and torque resulting in rapid drilling even in the hardest rock.
1 2 3 5 6

Quality, Reliability & Values Since 1968

Drill Rods and Extension Equipments

 
Integral Drill Steel Series
 

Integral Drill Steels are normally produced from 19mm (3/4" ), 22mm ( 7/8") or 25mm (1") Hexagon Drill Steel, where the dimensions given are measured across the flat of the hexagon.

Integral Drill Steels are a fixed length with a shank at one end and a bit at the other, and are able to drill to a depth equivalent to their effective length. The bit may consist of a single chisel shaped tungsten carbide insert or three such inserts.

To drill deep holes, the rods are designed to be used in a series where the length of any rod used is longer than the one used just before it. To do this, a series of rods must be produced so that the bit diameter is reduced for each increase in length of rod to prevent jamming of the bit in the hole.

 
 
The table shown below indicates some of the most common series of Integral Drill Steels produced :-
 
7/8" Drill Steels
Series 1
Effective Length
(mm)
Bit Dia
(mm)
Order
Code
800 34 834
1600 33 1633
2400 32 2432
3200 31 3231
4000 30 4030
4800 29 4829
5600 28 5628
6400 27 6427
Series 2
Effective Length
(mm)
Bit Dia
(mm)
Order
Code
800 40 840
1600 39 1639
2400 38 2438
3200 37 3237
4000 36 4036
4800 35 4835
5600 34 5634
6400 33 6433
Series 3
Effective Length
(mm)
Bit Dia
(mm)
Order
Code
400 34 434
800 33 833
1200 32 1232
1600 31 1631
2000 30 2030
Series 4
Effective Length
(mm)
Bit Dia
(mm)
Order
Code
600 35 635
1200 34 1234
1800 33 1833
2400 32 2432
     
Series 5
Effective Length
(mm)
Bit Dia
(mm)
Order
Code
600 41 641
1200 40 1240
1800 39 1839
2400 38 2438
     
Series 6
Effective Length
(mm)
Bit Dia
(mm)
Order
Code
800 36 836
1600 35 1635
2400 34 2439
3200 33 3233
4000 32 4032