Manufacture in DEEP HOLES GROUP plant, has two different drilling systems are used. One is with straight flute drills, we can drill holes from a minimum of 2 mm. to a maximum of 30 mm. in diameter, for a length up to 4000 mm.

With the BTA system we can drill holes from a minimum of 16 mm. to a maximum of 200 mm. in diameter, for a depth of 4000 mm. (on shafts with external diameter lower than 75 mm. we can reach a drilling length of 5000 mm.).

Our professionalism, commitment, and flexibility enable us to offer short delivery times (as long as jobs are scheduled a few days in advance, also by telephone) and delivery dates that are always respected.

Thanks to our constant investment in special equipment and repeated trials carried out in-house, we can offer drilled holes finished in nontraditional way


In addition, in manufacture, we can offer extremely smooth holes with ver y low roughness index. As long as they are requested on good quality materials, e.g. Stainless Steel, Ergal, Avional, Maragin Steel, and so on. For example, a hole with diameter 25 mm. (made on AISI 316) has roughness of 0.16, as shown by the char t below: