Tungsten Carbide Double Heel DTH Hammer is double casing system casing crown bit and percussion bit, double head rotary percussive casingsystem utilizes a rotary head to drive the outer casing equipped with atungsten carbide crown and a hydraulic drifter to drive the inner drill stringe quipped with a percussive drill bit. This is an excellent method for drilling straight holes in varying ground conditions. The water and compressed air canbe both provided as power.

It can be widely used in drilling for grouting holes in project such as cofferdam,foundation and geothermal well and etc.

Product Parameter

Type	Model	Length(mm)	Weight(kg)	External Dia(mm)	Hole Range(mm)
3.5 inch	DHD3.5	930	25	Φ82	Φ90-110
4 inch	DHD340	1030	39	Φ99	Φ110-135
	SD4	1084	40.5	Φ99
	QL4	1097	41	Φ99
	Mission 40	1005	40	Φ99
5 inch	DHD350	1214	76.5	Φ125	Φ135-155
	SD5	1175	72.5	Φ125
	QL5	1147	73	Φ125
	Mission 50	1110	68.5	Φ125	Φ155-190
6 inch	DHD360	1248	100	Φ142
	SD6	1261	100	Φ142
	QL6	1212	95	Φ146
	Mission60	1161	90	Φ146	Φ195-254
8 inch	D85	1492	188	Φ180
	SD8	1463	192	Φ180
	QL 8	1465	182	Φ180
	Mission 60	1338	176	Φ180	Φ254-311
10 inch	SD10	1502	290	Φ226
10 inch	Numa 100	1510	288	Φ226
12 inch	DHD 1120	All can be designed according to your requests!
	Numa120
	Numa 125

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Tungsten carbide double heel hammer