PQ HQ NQ BQ Surface Set Diamond Core Drill Bit For N Series Double Core Barrels

Created on：2023-12-18 14:28

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Q series core bits
Size	O.D	I.D	Availability
Size	mm	mm	Imp.	S.S	T.C.	PDC	TSP	E.P.
AQ	47.75/47.50	27.10/26.85	√	√	√	√	√	√
BQ	59.69/59.44	36.52/36.27	√	√	√	√	√	√
BQ3	59.69/59.44	33.65/33.40	√	√	√	√	√	√
NQ	75.44/75.19	47.75/47.50	√	√	√	√	√	√
NQ3	75.44/75.19	45.21/44.96	√	√	√	√	√	√
HQ	95.76/95.38	63.63/63.38	√	√	√	√	√	√
HQ3	95.76/95.38	61.24/60.99	√	√	√	√	√	√
PQ	122.30/121.80	85.09/84.84	√	√	√	√	√	√
PQ3	122.30/121.80	83.18/82.93	√	√	√	√	√	√
Core bits for N-series double core barrels
NMLC	75.44/75.19	52.12/51.87	√	√	√	√	√	√
HMLC	98.98/98.60	63.63/63.38	√	√	√	√	√	√
Core bits for T2 series double core barrels
T2-46	46.18/45.92	31.82/31.57	√	√	√	√	√	√
T2-56	56.13/55.88	41.83/41.58	√	√	√	√	√	√
T2-76	76.12/75.87	61.82/61.57	√	√	√	√	√	√
T2-86	86.13/85.88	71.83/71.58	√	√	√	√	√	√
T2-101	101.12/100.87	83.82/83.57	√	√	√	√	√	√
Core bits for T6 series double core barrels
T6-76	76.12/75.87	57.12/56.87	√	√	√	√	√	√
T6-86	86.13/85.88	67.13/66.88	√	√	√	√	√	√
T6-101	101.12/100.87	79.12/78.87	√	√	√	√	√	√
T6-116	116.20/115.82	93.14/92.89	√	√	√	√	√	√
T6-131	131.19/130.81	108.13/107.88	√	√	√	√	√	√
T6-146	146.18/145.80	123.11/122.86	√	√	√	√	√	√
Core bits for Chinese standard single tube core barrels
59	59.5	41.5	√	√	√	√	√	√
75	75.2	54.5	√	√	√	√	√	√
91	91.2	68	√	√	√	√	√	√
110	111.2	93	√	√	√	√	√	√
130	131.2	113	√	√	√	√	√	√
150	151.2	133	√	√	√	√	√	√
170	171.2	149	√	√	√	√	√	√
219	225.2	197	√	√	√	√	√	√
Core bits for Chinese standard double tube core barrels
75	75.2	54.5	√	√	√	√	√	√
91	91.2	68	√	√	√	√	√	√
110	111.2	93	√	√	√	√	√

Noted:

Imp. -Impregnated Diamond Type
S.S. -Surface Set Diamond Type
T.C. -Tungsten Carbide Type
PDC. -Polycrystalline Diamond compact Type
E.P. - Electroplated Diamond Type

Notice :
To select the right bit for the job, assess the speed and power of your drill for the size and depths of the holes to be drilled and assess ground conditions such as rock type/formation and down-hole conditions.

Size:
ROSCHEN bits are available in all standard drilling sizes . Also, non-standard sized bits can be produced according to requirements from clients.

Crown Height:
ROSCHEN offers crown impreg depths of 9mm, 12mm, and 16mm .The taller crown heights provide improved bit stability and reduced vibrations, enhancing bit life and performance.

Waterways:
Various waterways are available for diamond impregnated bits. Differing waterways allow for better flushing in various ground conditions and drilling systems.

Matrix:
ROSCHEN impregnated bits matrices can be selected by our engineer according to ground conditions at client's work site.

Threads:
standard WL threads as well as thread types required by clients are available.

Advantages:
1. Fast cutting and drilling speed
2. Long life, stable performance
3. Low power consumption
4. Professional OEM, superior grade quality, more than 50 years manufacturing experience
5..CE: ISO: 9001: 2000

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