SPEAR BOTS & SOCKETS
Spear bolts and the accompanying cast-in sockets fulfill the same function as curved bolts (permanently fix tunnel segments)whilst being easier to install.
A major advantage of the spear bolt is that following installation only one pocket per bolt requires finishing.
They are used to enable efficient erection of tunnel segments
COMPLETE RANGE AMAILABLE
HuiBo Railway manufacture a complete range of spear bolts and sockets from M16 to M30 diameter
Both mild steel 4.6 and high tensile 8.8 grades are availabla
Other grades available upon application
Spear boltscan be supplied in galvanised and sherardised as standard finishes
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