DHD Series

DHD Series bit with and without foot valve Sizes 4”- 8”,Suitable for surface mining, quarry blasting and water well drilling.High efficiency and long service life.

PRODUCT SPECIFICATION

DHD Series
Bit Specification	Bit Face shape	Bit Dia. (mm)	NO. Air Holes	Gauge Buttons	Front Buttons	Weight (Kg)	Part No.
DH45	Flat Convex Concave Drop Center	105	2	6×φ14	5×φ13	8.5	DH4-105
		110	2	7×φ14	6×φ13	8.8	DH4-110
		115	2	7×φ14	6×φ13	9.0	DH4-115
		120	2	8×φ14	7×φ13	11.0	DH4-120
		127	2	8×φ14	7×φ13	12.1	DH4-127
DH55	Flat Convex Concave Drop Center	135	2	7×φ18	6×φ14	16.0	DH5-135
		140	2	7×φ18	7×φ14	17.5	DH5-140
		146	2	7×φ18	7×φ14	18	DH5-146
		152	2	8×φ18	8×φ14	17.5	DH5-152
		156	2	8×φ18	8×φ16	17.9	DH5-156
		165	2	8×φ18	8×φ16	18.5	DH5-165
DH65	Flat Convex Concave Drop Center	152	2	8×φ18	7×φ16	22.0	DH6-152
		165	2	8×φ18	8×φ16	26	DH6-165
		171	2	8×φ18	8×φ18	27.2	DH6-171
		190	2	10×φ19	10×φ18	29.0	DH6-190
		203	2	10×φ19	12×φ18	30.3	DH6-203
DH85	Flat Convex Concave Drop Center	203	2	10×φ18	14×φ16	40.0	DH8-203
		216	2	10×φ18	15×φ16	49.0	DH8-216
		235	2	12×φ18	16×φ18	58.0	DH8-235
		254	2	12×φ18	18×φ18	71.0	DH8-254
We can add double gauge row button, gauge protection button and back reaming button on the design. Also we offer customization on bit diameter, air holes, carbide button shape and face shape according to customer requirements.

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