Sinorock SDA bolt is a bolting solution

1. Sinorock SDA bolt is a bolting solution for unstable ground comdition such as sand，gravel，silt，and clays，and in soft to medium fractured rock For projects facing such ground conditions,SDA bolt should be considered as the main productivity solution .
   The SDA bolt solution is designed for optimized installation,
   tailored to the projects .
2. SDA bolt is widely used as an efficient anchoring means，for drilling，grounting and anchoring in tunnel pre-support，slope anchor，mining，roadbed reinforcement and other projects，and they can work well in narrow space.We also provide accessories of drilling tools,like anchor
   bits,coupling,spherical nuts,plates,and stopper.
3. SDA bolt installation:
   It's very convenient with Sinorock self-drilling anchor during constructions,which is coupled by leftrotated international wave-shape thread.
   The SDA bolt steps:
   1 Drilling:The anchor with anchor head is drilled to designed depth with arriage or jackammer.
   2 The drilling machine is dismantled and grouting stopper is installed in the anchor hole which is 25cm away from the orifice.In special conditions of too fractured zone and high grouting pressure is needed,anchoring agent is used to seal it.

   3 The end of anchors is connected with grouting pump by an adaptor.
   4 Grounting will not stop untill it is full enough and the pressure reaches the designed value, which is determined by design parameters and performance of grouting.
   5.Plate and nut are installed according to design requirements.