The conventional core barrel 66B is a simple type and without inner tube. Technidrill offers the complete B range to core in homogeneous formations.

The technical characteristics of the B range are the following:
Diameters: 46, 56, 66, 76, 86, 101, 116, 131 and 146 mm.
Lengths: 500, 1 000, 1 500 and 3 000 mm.
Core barrels heads available alone.

The main advantage of the B range is that it reduces your cost per meter drilled. Indeed, the non-existent inner tube and the reduction in the number of spare parts is a significant advantage over the double core barrel.
Nevertheless, the absence of an inner tube does not permit keeping the core in an optimal way.