AB Tunnelling: tunnelling tools, products
and solutions for precast tunnel lining
AB Tunnelling is an Italian company specializing in tunnelling tools and equipment for mechanized excavation with Tunnel Boring Machines (TBMs). We design, manufacture and supply cutting-edge tunnelling tools and equipment for TBM operations, alongside complete product lines for precast tunnel lining — covering everything from segment moulds to sealing systems. Two focused areas of expertise, one clear mission: delivering performance, reliability and innovation to tunnelling projects worldwide.”
passion
Engineering that goes deeper
innovation
Proprietary tools, proven in the field
commitment
With you from design to delivery
State-of-the-art tunnelling tools
and auxiliary products
A Tunnel Boring Machine (TBM) without effective digging tools (cutters) is like a toothless lion. Our state-of-the-art TBM cutters are cutting rings and we call them RingX ®.
RingX ® are the spearhead of a wide range of high-end tunnelling equipment that we provide in the field of industrial excavation and drilling:
– BrushX: “tail brushes” with high performance tail brushes, which, mounted on the TBM, ensure a perfect distribution and sealing of the backfilling mixture used for tunnelling.
– Chemical consumables: a wide range of sealants, resins and soil conditioning agents that facilitate drilling.
– Grout and bentonite: supply of the best raw materials and design of the right backfilling mixtures necessary for tunnelling procedures.
Discover our tunnelling tools and all our products and solutions for tunnelling.
Advanced products and solutions for precast tunnel lining
Precast segments are the backbone and fundamental elements in the construction of a tunnel. We are leaders in the supply of:
– Segment moulds (stationary and carousel) for tunnel lining
– Sealing gaskets and accessories
– Fibers for concrete reinforcement
– GFRP (Glass Fiber Reinforced Polymer) solutions
– Robotic welding plant and automation
– Concrete release agent
RingX ®: High-Performance TBM Disc Cutters
In mechanized excavation, cutter performance is everything. RingX ® disc cutters are engineered to maximize TBM uptime, reduce intervention frequency and withstand the most demanding geological conditions — from soft ground to hard rock. Designed and manufactured in-house, they represent AB Tunnelling’s core expertise: precision-built tools that deliver measurable results on site.
MAIN CLIENTS
Our tunnelling equipment and tunnel lining solutions have been highly valued by many prestigious international companies.
Testimonials
AB TUNNELLING’s RingX represents a real innovation in the field of rock cutting tools
The collaboration between Korea Mould and AB TUNNELLING has guaranteed quality and reliability, robust segment moulds and prompt assistance
BrushX is an excellent product and has proven tightness and durability; we will also take them into consideration for future projects
The resins for the consolidation of the excavation face and tail sealant are among the market leaders
NEWS
Tunnel segment gaskets and connectors: design, materials and performance
In mechanized tunnelling, the quality of the precast segmental lining directly influences the service life of underground infrastructure; accordingly, every component of the lining is engineered to contribute to its overall performance. At the core of every reliable…
Rocchetta tunnel (Napoli–Bari, Italy): addressing abrasive sandstone challenges in TBM excavation
AB Tunnelling presented the Rocchetta tunnel case study at Sapienza University, focusing on TBM excavation in abrasive sandstone and cutter wear mitigation strategies.
Mechanized excavation with TBMs: a strategic approach to modern tunnelling
Mechanized excavation with TBMs has become the benchmark for modern tunnel construction, especially in complex infrastructure projects where time, safety, and cost control are critical. Compared to traditional excavation methods—such as drill & blast or…
Tunnel segment gaskets and connectors: design, materials and performance
In mechanized tunnelling, the quality of the precast segmental lining directly influences the service life of underground infrastructure; accordingly, every component of the lining is engineered to contribute to its overall performance. At the core of every reliable…
Rocchetta tunnel (Napoli–Bari, Italy): addressing abrasive sandstone challenges in TBM excavation
AB Tunnelling presented the Rocchetta tunnel case study at Sapienza University, focusing on TBM excavation in abrasive sandstone and cutter wear mitigation strategies.
Mechanized excavation with TBMs: a strategic approach to modern tunnelling
Mechanized excavation with TBMs has become the benchmark for modern tunnel construction, especially in complex infrastructure projects where time, safety, and cost control are critical. Compared to traditional excavation methods—such as drill & blast or…
TBM backfilling: the strategic role of filling the annular gap in tunnel construction
In mechanized tunnelling, backfilling is an essential process for ensuring stability, safety, and operational continuity during tunnel construction. Filling the annular gap — the space created between the estrados of the precast segments and the excavation profile —…