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1. available for application in standard DCDMA hole sizes ( B, N, H, P)., 2. ideal for use in most drilling conditions - details see: https://www.machineto.com/nq3-core-barrel-assembly-10317560

Tangshan Jinshioffers a full range of surface application core barrels. Available in standard double tube core barrels for easy conversion to triple tube configuration in broken ground.

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.

1 head assembly
2 inner tube
3 stop ring
4 core lifter
5 core lifter case
6 locking coulping
7 adaptor coupling
8 landing ring
9 outer tube
10 stabilizer
11 thread protection

Q3 wireline systemsconsist of the same groups as the Q , but utilize a third tube called an inner-tube liner or split tube that is placed inside the inner tube.

Size:Tangshan Jinshi core barrels are available in alll standard drilling size(BQ,NQ.HQ,PQ)as well as some regional specifications.