BQ NQ HQ PQ AQ Hot Selling wireline core drill rod / drill pipe
core barrel
Coring barrel is a section of tube in coring drilling, it is
attached to the upper part of the drill bit to accommodate and
protect the core. It also acts as a guiding tool when drilling. The
ordinary core tube is only a seamless steel pipe with thread at
both ends, and the diameter is slightly smaller than the diameter
of the drill bit (2 to 4 mm). The single core tube is 3 to 4.5
meters long. In order to prevent the bending of the hole, several
core tubes can be connected to form a long and large diameter
drilling tool.
| QB C series Rod parameter-geological steel pipe-entire length
thermal treatment, NC lathe with former cutters |
| Spec. | Unit | BCB | NCB | HCB | PCB |
| OD/ID | mm | 55.6/46 | 71/60 | 89/77.8 | 114.3/101.6 |
| Thickness | mm | 4.8 | 5.5 | 5.6 | 6.35 |
| Length | m | 1.5 or 3 | 1.5 or 3 | 1.5 or 3 | 1.5 or 3 |
| Weight | kg/m | 6.01 | 8.8 | 11.51 | 17.3 |
| thread length | mm | 44.45 | 44.45 | 44.45 | 63.5 |
| thread pitch | thread/inch | 3 | 3 | 3 | 2.5 |
| box thread tooth height | mm | 0.76 | 0.76 | 0.76 | 1.17 |
| pin thread tooth height | mm | 0.88 | 0.88 | 0.88 | 1.27 |
| thread tooth angle | . | 29 | 29 | 29 | 29 |
| tensile resistance(A series) | kn | 400 | 530 | 510 | 565 |
| tensile resistance(B series) | kn | 450 | 615 | 625 | 660 |
| bore depth | m | 1200 | 1000 | 900 | 800 |
| | | | | |
| RC series Rod parameter-geological steel pipe-entire length thermal
treatment, NC lathe with former cutters |
| Spec. | Unit | BRC | NRC | HRC | PRC |
| OD/ID | mm | 55.6/46 | 69.9/60.3 | 88.9/77.8 | 114.3/101.6 |
| Length | m | 1.5 or 3 | 1.5 or 3 | 1.5 or 3 | 1.5 or 3 |
| Weight | kg/m | 6.01 | 8.8 | 11.51 | 17.3 |
| thread length | mm | 42 | 42 | 41.91 | 63.5 |
| thread pitch | thread/inch | 3 | 3 | 3 | 2.5 |
| box thread tooth height | mm | 0.76 | 0.76 | 0.76 | 1.17 |
| pin thread tooth height | mm | 0.88 | 0.88 | 0.88 | 1.27 |
| thread tooth negative angle | . | 5 | 5 | 5 | 5 |
| tensile resistance(A) | kn | 450 | 525 | 545 | 565 |
| tensile resistance(B) | kn | 530 | 625.5 | 602 | 660 |
| bore depth | m | | | | |
| Process: cutting-upsizing-machining -heat treatment-machining
-phosphating-antirust | |
| type: connect directly ,coupling, upsizing without coupling | | | |
| Material:30CrMnSiA or 45MnMoB(A grade), XJY850 or BG850( B grade) |
Impregnated diamond core bits specifications
| Core Barrel Specification | Outside Set Diameter | Inside Set Diameter |
| Maximum | Minimum | Maximum | Minimum |
| inches | mm | inches | mm | inches | mm | inches | mm |
| AQ | 1.880 | 47.75 | 1.870 | 47.5 | 1.607 | 27.10 | 1.057 | 26.85 |
| BQ | 2.350 | 59.69 | 2.340 | 59.44 | 1.438 | 36.52 | 1.428 | 36.27 |
| NQ | 2.970 | 75.44 | 2.960 | 75.19 | 1.880 | 47.75 | 1.870 | 47.50 |
| HQ | 3.770 | 95.76 | 3.755 | 95.38 | 2.505 | 63.63 | 2.495 | 63.38 |
| PQ | 4.815 | 122.3 | 4.795 | 121.8 | 3.350 | 85.09 | 3.340 | 84.84 |
| T2-101 | 3.981 | 101.12 | 3.971 | 100.8 | 3.300 | 83.82 | 3.290 | 83.57 |
| T6-101 | 3.981 | 101.12 | 3.971 | 100.8 | 3.115 | 79.12 | 3.105 | 78 |
We have other series impregnated core bits
Wireline series: Geobor S, WLA, WLB, WLN, WLH, WLP, WLB3, WLN3,
WLH3, WLP3, WLN2, AQ, BQ, NQ, HQ, PQ, SQ, 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,
NTW, HTW
Chinese standard: 56mm, 59mm, 75mm, 89mm, 91mm, 108mm, 110mm,
127mm, 131mm, 150mm, 170mm, 219mm, 275mm
Russian standard: 59, 76, 93, 112, 132, 152 mm
We also supply TSP core bits, PDC matrix body core bits, and steel
body PDC core bits.
