GTF® system: precision, productivity and safety for profiling, demolishing and excavating.

The GTF® system performs specialty milling thanks to its high power and patented sophisticated proprietary software that controls the hydraulic system. Specialty milling is specifically defined as milling that guarantees a minimum production of 3.5 cu m/h and a depth precision of ± 5 mm.

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What is specialty milling?

Specialty milling stands out from regular milling (removal of one or more layers of concrete or asphalt, either mechanically or by high-pressure water jetting), because it delivers results not achievable using traditional or hydrodemolition systems, including:

A depth precision of ± 5 mm, which permits an exact calculation of the quantity of grout needed to restore the surface; this leads to significant cost savings also due to the evenness of the surface.
High productivity (minimum 3.5 cu m/h), resulting in a highly reduced job completion time
An even and perfect gripping surface that favors the application of the new layer of grout, and ensures the durability of the repair.

Comparison between milling with the GTF® system and traditional milling

Specialty milling is specifically defined as milling that guarantees a minimum production of 3.5 cu m and a depth precision of ± 5 mm.

Milling with GTF® system

Milling with traditional system

Depth 30-50 mm
25-35 Mpa	70-120 m²/h
35-45 Mpa	50-90 m²/h
>70 Mpa	20-30 m²/h
Precision ± 5 mm

Depth 75-100 mm
25-35 Mpa	40-60 m²/h
35-45 Mpa	30-40 m²/h
>70 Mpa	20-30 m²/h
Precision ± 5 mm

Depth over 100 mm
25-35 Mpa	4-6 m³/h
35-45 Mpa	3-4 m³/h
>70 Mpa	2-3 m³/h
Precision ± 5 mm

Depth 30-50 mm
25-35 Mpa	11-30 m²/h
35-45 Mpa	N.D.
> 70 Mpa	N.D.
Precision N.D

Depth 75-100 mm
25-35 Mpa	8-10 m²/h
35-45 Mpa	N.D.
> 70 Mpa	N.D.
Precision N.D

Depth over 100 mm
25-35 Mpa	N.D.
35-45 Mpa	N.D.
> 70 Mpa	N.D.
Precision N.D

Milling and profiling

Niches and safety areas

Drain channels and cable ducts

Demolishing sidewalks and lowering kerbs

Trenches

Structural cuts

Who we are

Our company was founded by Terzo Grotti in 1967. In the early 1980s, with sons Giuliano and Giampiero taking an active part, Grotti S.r.l. extended its core business of repair and transformation of industrial vehicles and earthmoving machines to include the supply of rental equipment on a national scale.