Curved Tunnel Bolts

Cured bolts are used to permanently fix tunnel segments together through a radius hole.They can be applied to both radial and circumferential joints.A complete range of this products isreadily available from M16 to M30 diameters.Length and radius can be made to a customer's specific requirement.Mild steel 4.6 and high-tensile steel 8.8 grades are standard with other grades available on application.Curved tunnel bolts can be supplied in a range of finisher.