Currently,self drilling hollow bar support technology has been applied to many projects, but the project has a certain complexity and uncertainty, every concrete construction of geotechnical engineering, has its own particularity. 

As pile foundation, self drilling hollow bar not only has the properties of the same kind bored pile and steel-pipe pile, but also has its own properties. With disposable drill bit, self drilling hollow bar can drill faster and deeper.
Self drill anchors  are effective in a variety of ground conditions, including gravel, clay, rock, sand and made ground. This method of mini piling is used in a wide range of projects including rail related work and foundation upgrades, stabilisation and underpinning as well as facade retention, tension piles, road works and bridge works.

At Sinorock, we are a pioneer in this anchor bolt field in China. We have invested substantially in specialized construction equipment & machinery, which is operated by a team of experienced technical & operation staff from China & abroad. With our specialized equipment, experienced management and technical & operational staff, we aim to offer any ground engineering solutions which are unique, cost effective and time saving to meet present market needs. Our long term experience resulted in various cost deductions measure. 
Sinorock use its anchor bolt system for solving these problems which occurs in construction.
Sinorock has been known as a major source for construction materials used in civil and 

structural engineering.Sinorock offers vast range of technical products and total solutions 

to general contractors, as well as to consultants.