Specifications 
1.Outside Diameter:108~508  
2.Application:mining ,water well drilling,oil drilling,machinery etc.  
3.Technique:hot rolled  
 

Application Range 
Drilling of water wells,geothermal wells,short micro piles,medium mini-type frouting hole of building ,dam and harbour project,etc. 

Advantage 
Brief structures,simple operation,reliable quality,stable performance,long service life 
Operation Procedure 
1.When drilling starts,the reamer opens and enlarges the hole to drive the casing shoe and casing tube down, 
2.When the drilling in overburden formation is finished,reserve the rotation to close the reamer,then the assembly can be pulled up through the casing tube. 
3.The casing tube can be left in the hole,or can be pulled out by means of frout sealing material. 
4.Use the normal drilling tools to drill and achieve to the desired depth. 

Order Guide:A+B+C 

The other specification casing tubes are available upon request.