412F Air flush Core Barrel Inner Tube 1.5m or 3.0m
412F Air flush Core Barrel Inner Tube 1.5m or 3.0m
Features Gallery Product Description Request A Quote
Basic Infomation
Place of Origin: China
Brand Name: ROSCHEN
Certification: API
Model Number: 412F
High Light:

412F Air flush Core Barrel


412F Air flush conventional Core Barrel


Air flush Core Barrel

Payment & Shipping Terms
Packaging Details: wooden box
Delivery Time: 10~15 days
Supply Ability: 1000sets/M
Product Name: 412F Air Flush Core Barrel
Application: Soft To Medium Hard Rock
Hole Diameter: 107.2mm
Core Diameter: 74.7mm
Product Description

412F Air flush Core Barrel for soft to medium hard rocks


Key to Main Parts of 412F Core Barrel Assembly


Complete core barrel consists of:


1. Core Barrel Head

2. Inner Tube 1.5m or 3.0m

3. Outer Tube 1.5m or 3.0m

4. Inner Tube Extension

5. Core Lifter

6. Core Lifter Case


The 412F Air flush Core Barrel advantage is it can be optimized for the use of air flush

Specification Core Barrel Type
Hole Diameter (mm) 107.2
Core Diameter (mm) 74.7
Kerf / Crown Thickness (mm) 16.25
Cutting Area (cm2) 46.5
Hole Area (cm2) 90.3
Cutting Area as % of Hole Area 51.40%
Core Area (cm2) 43.8
Thread Connection in Head* HW
Recommended Casing PW
Conversion to triple tube possible


Cross-over sub required for drill rods not matching the thread connection in core barrel head


Applications and functions:

  1. 412F Air flush Core Barrel is often used for open-cast coal exploration and general geotechnical coring in situations where it is not desirable to use air as the flushing medium. It is designed for coring in soft to medium hard rocks using air as the flushing medium.

  2. What is essential for cooling the bit and uplifting rock cuttings from the borehole? The large annular space between the inner and outer tubes, in combination with face-discharge core bit designs, allows a large volume of air to reach the face of the bit.

  3. This core barrel has proved to be very effective when used with PCD core bits, giving a fast rate of penetration and good core recovery

Core Bit is not supplied as part of the core barrel assembly, but must be chosen correctly to match the particular application and rock formation.  

Recommended Products
Get in touch with us
Contact Person : Mr. Bill, George, Michael
Tel : 13764195009
Fax : 86-021-54380177
Characters Remaining(20/3000)