swellex rock bolts Hydraulic Expansion Friction Bolts for slope stability Underground Tunnel Arch split set rock bolts

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The Hydrabolt is a hydraulically expanded rockbolt with superior bond strength for tensile loading applications. The hollow, tubular Hydrabolt is injected with high pressure water upon installation and then expands to adapt to the shape of a predrilled support hole. The Hydrabolt incorporates a check valve to prevent the fluiofrom being released once the inflating nozzle is removed. This system provides abetter bond as the inflated tube adapts to the shape, size and irreqularities of thehole and distributes the clamping force evenly throughout the length of the hole As the installed Hydrabolt is sealed, the internal corrosion is self-inhibiting Hydrabolts are fitted with an integral load indicator that confirms it has been correctly installed by popping forward once the Hydrabolt has been adequately pressurized; secondly the color of the load indicator identifies which length of Hydrabolt has been installed


Post time: Feb-27-2024