TT Series Double Tube Core Barrels

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TT Series Double Tube Core Barrels

TT core barrels are conventional double tube core barrels with an ultra-thin wall. They are designed for coring in medium hard to very hard homogenous rock in conjunction with water flushing. These core barrels are most frequently used for underground mining operations.

Available in metric (millimetre) hole sizes 46 and 56 mm

TT聽Series Double聽Tube Core Barrels
Size Hole(mm) Core(mm) Head Thread
TT46 46 35.2 As per need
TT56 56 45.2 As per need


1. A high rate of penetration due to small cutting area of the core bit

聽2. Use of lower pressure and torque minimizes the wear on equipment

聽3.聽Lower costs for core bits

1.5m and 3.0m length core barrels are available.


Core Barrel Size:
Wireline series: AQ, BQ, NQ, HQ, PQ, PQ3, HQ3, NQ3, BQ3, NQ2, WL-56, WL-66, WL-76
T2 series: T2 46, T2 56, T2 66, T2 76, T2 86, T2 101
TT series: TT 46, TT 56
T6 series: T6 76, T6 86, T6 101, T6 116, T6 131, T6 146
T6S series: T6S 76, T6S 86, T6S 116, T6S 131, T6S 146
B series: B46, B56, B66, B76, B86, B101, B116, B131, B146
MLC series: NMLC, HMLC
LTK series: LTK48, LTK60
WF series: HWF, PWF, SWF, UWF, ZWF
WT series: RWT, EWT, AWT, BWT, NWT, HWT (Single Tube, Double Tube)
WG series: EWG, AWG, BWG, NWG, HWG (Single Tube, Double Tube)
WM series: EWM, AWM, BWM, NWM, HWM
Other sizes: AX, BX, NX, HX, TBW, NQTT, HQTT, TNW, 412F, BTW, TBW, M101