High quality, quick and easy installation
guaranteeing efficiency and safety
EMC ROCK BOLT
A Rock bolt is a steel rod used in tunnelling and underground mining. The tube has an omega shape and it is inserted in a hole drilled into the roof or walls of a rock formation to provide support to the roof or sides of the cavity. Once the rock bolt is inserted in the hole it is expandedusing a special pump and adapter which provide high pressure water flowinside the tube making the bolt being expanded inside the drilled hole. This process creates instant support and it has several advantages: safe, simple and clean installation, no previous operator experience required and it is very flexible depending de ground necessities.
Because of the high-quality properties of the steel we use (S355 MC) and the technology and automation of our production processes we guarantee the best quality and service.
Currently we provide three types of expend rock bolts: STANDARD, MIDI and SUPER. The main difference between them are the thickness, diameter and breaking load. You can see all the technical properties in the table.
|Variable Lenght Up To||6000 mm||6000 mm||6000 mm|
|Original Pipe Diameter||41mm||54mm||54mm|
|Maximum Pipe Diameter||26mm||39mm||39mm|
|Recomm Drill Diameter||35-38mm||45-51mm||45-51mm|
|Minimum Breaking Load||120 kN||160kN||240kN|
|Weight||2 kg/m||2,7 Kg/m||3,9 kg/m|
|Raw Material Quality||S 355-MC||S 355-MC||S 355-MC|
|Front Bushing Diameter||28mm||38mm||38mm|
|Diameter of the Inflation Bushing||30mm||41mm||41mm|