Applicable strata and advantages of self drilling bolts

Generally speaking, the self drilling anchor bolt is applicable for the stratum which suitable for retaining wall and soil nail wall, and it also suitable for the stratum which suitable for prestressed anchor bolt. For the anchoring technology with drilling operation, drilling often becomes the most critical process, and directly affects the bearing capacity of […]

Technical measures for improving pulling force of self drilling rock bolt

1. Choose reasonable drilling technology 1) Drilling hole is strictly prohibited water, which should use high-pressure wind piercing, slag discharge, cooling operation; 2) For determine the diameter of drill bit, it’s should adopt drilling machine when drilling with self drilling rock bolt, check the verticality of the drill pipe, the anchor hole deflection, with footage […]

Safe soil nails from Sinorock ensure the quality of construction

The development of vertical and sub-vertical elements to standard soil nail system has increased the use and application of soil nail earth retention and slope stabilization. Advances in material such as fibre glass pipe which improves mechanical interaction with injected grout is used in the tunnel face. The use of double corrosion protection and durable […]

Application of self drilling anchor in building foundation

Self drilling anchor as a kind of simple, reliable, practical and efficient construction method. The micro pile technique is a reliable system that can bear large axial or lateral loads. And it has little interference on the the existing structure. The self drilling anchor bolt is used in the foundation engineering. When the self drilling […]

Characteristics and Processing Methods of Self – drilling anchor bolt’s Thread

Sinorock self-drilling anchor system is an advanced anchoring system that can directly perform drilling and grouting in loose soil and fractured rock formations, which include continuous full-thread hollow anchor bolts and other accessories. Self-drilling anchor system can be used as micro-piles and soil nails, which is a fast and efficient rock and soil anchoring solution. […]

Quality inspection and inspection of seamless steel pipes for making hollow bar micropiles

Hollow bar micropiles are made of seamless steel tube. The product quality of seamless steel pipe must be in accordance with product standards and technical specifications for a comprehensive inspection. Specific inspection, including chemical composition analysis of steel pipe, geometric size inspection, surface quality inspection, physical and chemical performance testing, process performance testing, metallographic analysis […]