product description
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![]() | 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 STRENGTH GRADES Both mild steel 4.6 and high tensile 8.8 grades are availabla Other grades available upon application FINISHES Spear boltscan be supplied in galvanised and sherardised as standard finishes |
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