Rock bolt

The excellent anchor rod of prestressing force: From have no Zong rib thread steel metal rod body and spherical tray , reduce hindrance washer, metal flat washer and excellent damping nut
 
Rod body lets the attachment composition of pressing system ,Its performance conducted standard MT146.2-2002 ,Thread steel rod body from unidirectional left Xuan have no Zong rib thread steel system becomes ,End department levels to cut ,Tail processing becomes the thread that may join nut, in it is dozen that the torque that sets takes off nut damping do not drive , nut damping begins after opening to give anchor rod to exert installation stress. Anchor rod installation stress is in 4 generally ~ 5 tons. In lash land presses big condition next rod body makes reduction press system can effective alleviation lashes land the pressure that presses many rod bodies , with reach protective rod body purpose
 
strong point:Can not only exert greater prestressing force and may raise considerably to protect speed, protects strength stability , can improve tunnel obviously to protect effect. Install anchor rod the standardization of prestressing force, is easy to ensure to pay to protect strength and construction quality inspection.