Segment / Tunnel Concrete Rings Connection Bolts

Segment / Tunnel Bolts, also be called Tunnel Segment Bolt,Curved Tunnel Bolt,Tunnel Bolt,Spear Tunnel Bolt, are classified under the special type of bolts that are known as structural bolts which can be produced in various grades, sizes and load capacities depending on their specific use. These tunnel/segment bolts are utilized to make transportation through undersea and underground tunnels possible by binding together a number of metal beams and posts which make up the tunnel’s frame.

Application  of Segment / Tunnel Bolts

To be used for connecting concrete ring when Tunneling

Type  of Segment / Tunnel Bolts

There are straight one and curved one.The straight one should be used and assembly with plastic thread inserts.

Photos of Segment / Tunnel Bolts

Technical Requirement of Segment / Tunnel Bolts

1.Material :grade 4.6,5.8,6.8,8.8,10.9,12.9

2. finish 

Plain,Dacroment,Hot Dip Galvanized

Supply city of Segment / Tunnel Bolts

Suzhou,Hefei,Shenzhen,Nanjing,Changchun,Chengdu,Xuzhou,Xiamen,Fuzhou,Wuhan,Lanzhou,Dongguan,Foshan