| - Tungstene carbide, (serial or made to measure) | ||
| - Teeth in special steel (for clutches and skips) | ||
| - Special steels usury-proof | ||
| - Drilling bits | ||
| - Down the hole hammer | ||
| - Tips and equipment for pneumatic hammers | ||
| - Equipment for stone, marble and concrete work | ||
| - Diamond disks | ||
| - Anchorage accessories | ||
| (in special steel and synthetic) | ||
| - Drainpipes for piezometers | ||
| - Drainpipes for inclinometers | ||
| - Bentonite | ||
| - Plugging up products | ||
| - Spare parts | ||