Down the hole dth drilling hammer bit manufacturer

1.The longer life of the drill: the alloy material, with longer using life which better than the similar products; 2.High Dilling Eficiency: the dril buttons is wear-resistant, so that the drill can always keep sharp thus greatly improving the speed of the drllng. 3.The driling speed is stable:the bit is scraped and cut to break the rock. 4.Good Performance: the New Diamond bit has strong wear resistance, good Diameter protection and can make the cutting teeth be used efficiently.

5.The use of a wide range:the practice proves that the bit is suitable for carbonate rock, limestone, chalk, clay rock,siltstone, sandstone and other soft and hard(9-grade drillability of rock, hard rock drling), compared with normal bit,especially drilling in 6-8 grade rock the effect is particularly significant.

Model	Thread Connection	OD(mm)	Rec.Hole Size	Shank Style	Working Pressure(Bar)
CD35	API 2 3/8" Reg	φ82mm	φ90-φ105	DHD3.5 CD35	1.0-1.5Mpa
CD45	API 2 3/8" Reg	φ99mm	φ110-φ135	Cop44 DHD340 CD45	1.0-2.5Mpa
CSD4	API 2 3/8" Reg	φ99mm	φ110-φ135	SD4 CSD4	1.0-2.5Mpa
CQL40	API 2 3/8" Reg	φ99mm	φ110-φ135	QL40 CQL40	1.0-2.5Mpa
CD55	API 2 3/8" Reg API 3 1/2" Reg	φ125mm	φ135-φ155	Cop54 DHD350R CD55	1.0-2.5Mpa
CSD5	API 3 1/2" Reg	φ125mm	φ135-φ155	SD5 CSD5	1.0-2.5Mpa
CQL50	API 3 1/2" Reg	φ125mm	φ135-φ155	Cop54 QL50 CQL50	1.0-2.5Mpa
CD65	API 3 1/2" Reg	φ148mm	φ155-φ190	Cop64 DHD360 CD65	1.0-2.5Mpa
CSD6	API 3 1/2" Reg	φ148mm	φ155-φ190	SD6 CSD6	1.0-2.5Mpa
CQL60	API 3 1/2" Reg	φ148mm	φ155-φ190	Cop64 QL60 CQL60	1.0-2.5Mpa
CD85	API 4 1/2" Reg	φ185mm	φ195-φ254	Cop84 DHD380 CD85	1.0-2.5Mpa
CSD85	API 4 1/2" Reg	φ185mm	φ195-φ254	SD8 CSD8	1.0-2.5Mpa
CQL80	API 4 1/2" Reg	φ185mm	φ195-φ254	QL80 CQL80	1.0-2.5Mpa
CSD10	API 4 1/2" Reg API 5 1/2" Reg API 6 5/8" Reg	φ225mm	φ254-φ311	SD10 CSD10	1.0-2.5Mpa
CN100	API 6 5/8" Reg	φ225mm	φ254-φ311	NUMA100 CN100	1.0-2.5Mpa
CSD12	API 6 5/8" Reg	φ275mm	φ305-φ445	SD12 CSD12	1.0-2.5Mpa