Sinorock high quality expansion shell

Product Description

Features and advantages
1.Expansion�shell�bolts�are�a�common�style�of�area�ground�support.�There�is�an�expansion�shell�at�the�end�of�the�bolt�which�is�inserted�into�the�hole.
2.As�the�bolt�is�tightened�by�the�installation�drill�the�expansion�shell�expands�and�the�bolt�tightens�holding�the�rock�together.�Mechanical�bolts�are�considered�temporary�support.
3.The�expansion�units�have�exclusive�features�that�ensure�positive�anchorage�under�the�most�condition.�
4.The�expansion�units,�which�are�available�in�many�variations,�conforms�to�the�hole�diameter.�This�ensure�a�even�load�distribution�between�the�anchor�bolt�and�the�rock�at�the�anchor�print.
Application and usage
Expansion�shell�is�an�important�part�of�expansion�shell�anchor�bolt.�
Sinorock�expansion�shell�can�provide�prestressing�to�rock.�It�is�very�
convenient�and�easy�to�install,�it�s�suited�temporary�support�and�permanent�support.�It�maches�with�domed�
plate,�nut�and�domed�washer.�And�they�are�suited�for�use�in�single�or�
twin�grout�tube�installation�due�to�the�minimal�rotation�the�bar�undergoes�
the�setting�process.


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