changshajinxin superabrasives co.,ltd

Core bit & Reaming shell & Products

1. Synthetic diamond core bits

Diamond core bits are widely used in the fields of geological exploration, engineering-oriented, hydroelectric and building engineering. Diamond drill bit series include the bits of different structures (Single tube bit, Double tube bit and wire line coring bit, etc.) and of various bit standards (domestic and foreign standards.).

Diamond reaming shell is used together with diamond drill bits, maintaining the hole size and improving drilling stability. Forsun can provide electroplated diamond reaming shell and polycrystalline reaming shell.

General Bits Applications Overlap

SITE FORMATION		BIT MATRIX
Hardness	Rock Type	Black	Red	Silver	Blue	Yellow	Gold	Green	Pale Green
Soft	Broken & Backfill Stratum
	Clay
	Soft Sandstone
	Shale
Medium Hard	Limestone
	Reinforced Concrete
	Dolomite
	Porphyry
	Andesite
	Graniton
Hard	Basalt
	Diorite
	Diorite Granite
	Gneiss
Ultra Hard	Granite
	Bhyolite
	Quartz
	Fire Stone

BLACK: Broken and loose backfill stratum formations, iron.
RED: Broken fractures coarser-grained medium-hard and abrasion formations.
SILVER: Slight weathering of medium-hard and hard formations.
BLUE: Coarser grained medium-hard and abrasive formations.
YELLOW: Get wick from concrete, medium-grain of abrasive and medium-hard to hard
formations.
GOLD: Hard, very hard and line-grained formations.
GREEN: Medium-hard to hard, line-grained formations.
PALE GREEN: Hard to upper-hard, line-grained formations.

2. Synthetic diamond Masonry bits Series

　Masonry bits are widely used in drilling hole in

reinforced concrete wall and floorslab to lay water

pipe, heating radiator pipe, gas pipe and sewer.

Specifications of masonry bit series mm

size	Nominal O. D.	20	26	32	38	45	52	57	63	76
size	Standard length	250	250	320	320	320	320	320	320	320

size	Nominal O. D.	82	88	102	108	116	126	132	159	175	200
size	Standard length	320	320	320	320	320	320	320	320	320	400

Description of synthetic diamond mining bits and reaming shells

Bit	Kind		Description
	Double barrel bit	Surface set	φ28,φ36,φ46,φ59φ60,φ66,φ75,φ76,φ91,φ94,φ110
		Impregnated
	Single barrel bit	Surface set	φ36,φ46,φ59, φ75, φ91,φ94,φ110,φ130,φ150,φ170,φ200
		Impregnated
	Wireline core bit	Surface set	φ46,φ47,φ59,φ60, φ75,φ91
		Impregnated
	Special shape bits
Reaming shell	?Double barrel reaming shell		φ28,φ36,φ46,φ47,φ59,φ60,φ66,φ75,φ91,φ94,φ110
	Single barrel reaming shell		φ36,φ46,φ47,φ59,φ60,φ75, φ91,φ94,φ110,φ130,φ150,φ170,φ200
	Wireline barrel reaming shell		φ46,φ47,φ59,φ60, φ75,φ91

Standard diamond set dimensions for DZ bits and Reaming shells

Size	Set Bit Dimensions		Reaming Shell Dimensions
Size	O. D. mm	I. D. mm	O. D. mm	I. D. mm
28	28	17	28.5	21.5
36	36.5	21.5	37	27.5
46	46.5	29	47	36.5
59	59.5	41.5	60	49
75	75	54.5	75.5	64
S 75 WL	75	49	75.5	62
91	91	68	91.5	79
S 91 WL	91	62	91.5	76

Craelius metric standard

Hole size mm	Number of waterways Diamy Diaborit	Coring bit type I. D.mm=core TT T2 B K3	Reaming shells O. D. mm	Casing shoe bits O. D. mm I. D. mm
36	2 4	---　 22 22 ---	36.3	--- ---
46	3 6	35.6 32 32 ---	46.3	46 36.5
56	4 8	45.5 42 42 ---	56.3	56 46.5
66	5 10	--- 52 52 38	66.3	66 56.5
76	6 12	--- 62 62 48	76.3	76 66.5
86	7 12	--- 72 72 58	86.3	86 76.5
101	8 14	--- 84 87 72	101.3	101 86.5
116	9 10	--- --- 102 86	116.3	116 101.5
131	10 10	--- --- 117　 101	131.3	131 116.5
146	11 10	--- --- 132 116	146.3	146 131.5

Casing shoe bits, casing bits and casing reamers same for DCDMA and CDDA

Hole Size	Casing shoe bits		Casing reamers	Casing bits
	O. D.	I. D.	in. mm	O. D. I. D. in. mm in. mm
	in. mm	in. mm	in. mm	O. D. I. D. in. mm in. mm
XRT	1.48 37.7 　1.19 30.2		--- ---	1.48 37.7 1.00 　25.4
EX	1.87 47.6 　1.50 38.0		1.89 48.0	1.87 47.6 1.40 　35.6
AX	2.34 59.5 　1.90 48.3		2.36 59.9	2.34 59.5 1.78 　45.2
BX	2.96 75.3 　2.37 60.2		2.98 75.6	2.96 75.3 2.21 　56.2
NX	3.61 91.8 　2.99 76.0		3.63 92.2	3.61 91.8 2.84 　72.1
HX	4.62 117.4 　3.92 99.7		--- ---	4.62 117.4 3.77 　95.9

D.C.D.M.A Standard

Size	Diamond core bits			Reaming shells
	Nominal Core Diameter	Nominal Hole Diameter	Set Dimensions + - 0.005	Set Dimensions + - 0.005
	in. mm	in. mm	O. D. I. D.	O. D. mm
RW	3/4 19.0	1-1/8 28.5	1.160 0.735	1.175 29.8
*XRP	7/8 21.2	1-5/16 33.3	1.295 0.875	1.310 33.2
EX-EWG	7/8 21.2	1-1/2 37.7	1.470 0.845	1.485 37.7
EXM-EWM	7/8 21.2	1-1/2 37.7	1.470 0.845	1.485 37.7
AX-AWG	1-1/8 30.0	1-7/8 48.0	1.875 1.185	1.890 48.0
AXM-AWM	1-1/8 30.0	1-7/8 48.0	1.875 1.185	1.890 48.0
BX-BWG	1-5/8 42.0	2-3/8 59.9	2.345 1.655	2.360 59.9
BXM-BWM	1-5/8 42.0	2-3/8 59.9	2.345 1.655	2.360 59.9
NX-NWG	2-1/8 54.7	3 75.7	2.965 2.155	2.980 75.7
NXM-NWM	2-1/8 54.7	3 75.7	2.965 2.155	2.980 75.7
HX-HWG	376.2	3-7/8 98.8	3.890 3.000	3.907 99.2
2-3/4"×3-7/8"	2-3/4 68.3	3-7/8 98.8	3.840 2.690	3.875 98.4
4"×5-1/2"	4 100.8	5-1/2 139.6	5.435 3.970	5.495 139.6
6"×7-3/4"	6 151.6	7-3/4 196.8	7.655 5.970	7.750 196.9

*Optoional Sizes

"Q" Wire line bits sizes

Size	Nominal Hole Diameter	Nominal Core Diameter	Std. Set-O. D. Dimen.	Rm.Shi. Ste-O. D. Dimen.	Set-I. D. Dimen.
Size	Inches　 mm	Inches mm	In. ( Approx )	In. ( Approx )	In. ( Approx )
AQ	1-57/64　 48.0	1-1/16 　27.0	1.875	1.890	1.062
BQ	2-23/64　60.0	1-7/16　 36.5	2.345	2.360	1.437
NQ	2-63/64　75.8	1-7/8 　47.6	2.965	2.980	1.875
HQ	3-25/32　 96.0	2-1/2 　63.5	3.766	3.782	2.500
PQ	4-53/64　122.6	3-11/32　85.0	4.805	4.827	3.343


	Micron
	RVD/RVE/RVEG
	MBD Series
	SMD Series
	CBN Series

	Laser Welded Saw Blade
	Diamond Brazed Saw Blade
	Diamond Sintered Saw Blade
	Diamond Segments
	Synthetic Diamond & CBN Grinding Wheels
	Wet grinding
	Core bit & Reaming shell & Products
	PCD & PDC
	Flexible Polishing Pads
	Diamond Grinding Paste

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