1.Expansion sheel anchor rod 2.Rock reinforcement 3.Used in tunneling, minning and other underground supporting

       Expansion sheel anchor rod consists of steel shell-expansion anchor head, hollow anchor rod, grouting stopper, arch plate and nut. Coupling and grouting block are optional. 

  It is designed for hard rock at fractured zone with growing joints which may cause loosing of fractured rock and reducing of friction between rocks, resulting in loosing of surrounding rocks in larger area. Applying enough pre-stress would keep its stability.

Product Specification:

specification	GY25	GY28	GY32
external diameter(mm)	25	28	32
Breaking load(KN)	≥150-180	≥180-220	≥220-250
Interior diameter(mm)	≥15	≥17	≥22
drilling diameter(mm)	42	42	51
thread type	left hand
standard length(m)	1.0/1.5/2.0/2.5/3.0/3.5/4.0/4.5/5.0/6.0
length tolerance	±2.5%

expansion sheel anchor rod