タイトルまたは説明

Tangshan Jinshi offers a full range of surface and underground application core barrels. 

The core barrel assembly is composed of the inner-tube group and outer-tube group. The inner-tube group is composed of: 

Head Assembly 
Inner Tube 
Core Lifter Case 
Core Lifter 
Stop Ring 
The inner-tube group collects the core sample during the drilling process and is independent of the outer-tube group. The outer-tube group is composed of the remainder of the core barrel components: 

Locking Coupling 
Adapter Coupling 
Outer Tube 
The outer-tube group always remains at the bottom of the hole and houses the inner-tube group during the drilling process.