Product Description

Curvedtunnel Bolts
Curved bolts are used to permanently Fix tunnel segments together through a radius hole, They can
be used in both radial and circumferential joints.
COMPLETE RANGE AVAILABLE 
HuiBo Railway manufacture a complete range of curved tunnel bolts from M*6 to M*0 diameters.
Lengths and radius can be made to suit customers requirements.
We encourage enquiries and drawings for Customization of bolts and fittings.
STRENGTH GRADE 
Both mild steel 4.6 and high tensile 8.8 grades are available.
Other grades available upon application.
FINISHES 
Curved tunnel bolts can be supplied in galvanised and sherardised as standard finishes .
Other finishes available to suit customer requirement.