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Strong Drilling Rig Drill Bits Dhd350 Cop54 Ql50 Sd5 Hm5 For Water Well

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Quzhou Sanrock Heavy Industry Machinery Co., Ltd.

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Strong Drilling Rig Drill Bits Dhd350 Cop54 Ql50 Sd5 Hm5 For Water Well

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Brand Name :	Sanrock
Certification :	ISO9001
Supply Ability :	5000 Set/Sets per Month
Price :	negotiable

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Strong Drilling Rig Drill Bits Dhd350 Cop54 Ql50 Sd5 Hm5 For Water Well

Bit face shape selection:
1. Drop Center Bit
For high penetration rates in soft to medium hard and fissured rock formations. Low to medium air pressures. Maximum hole deviation control.
2. Concave Face
The all-round application bit face specifically for medium hard and homogenerous rock formations. Good hole deviation control and good flushing capacity.
3. Convex Face
For high penetration rates in soft to medium-hard with low to medium air pressures. It is the most resistance to steel wash, and may reduce the load and wear on the gauge buttons, but poor hole deviation control.
4. Double Gauge Face
This kind of face shape is suitable for fast penetration rates in medium to hard rock formations. Designed for high air pressures and good resistance to steel wash step gauge bit.
5. Flat Face Bit
This kind of face shape is suitable for hard to very hard and abrasive rock formations in applications with high air pressures. Good penetration rates an resistance to steel wash.

DTH hammer type		SRHD55	SRHD55C	SRHSD5	SRHQL5
Length(less bit) mm		1214	1160	1175	1156
Weight(less bit) kg		76.5	72.5	72.5	73
External diameter mm		Φ125	Φ125	Φ125	Φ125
Bit shank		COP54 DHD350R	HD55C DHD350Q	SD5	QL50
Hole range(mm)		Φ135-155	Φ135-155	Φ135-155	Φ135-155
Connection thread		API 2 3/8"Reg	API 2 3/8"Reg	API 3 1/2"Reg	API 3 1/2"Reg
Connection thread		API 3 1/2"Reg	API 3 1/2"Reg
Working pressure		1.0-2.5Mpa	1.0-2.5Mpa	1.0-2.5Mpa	1.0-2.5Mpa
Impact rate at 1.5-1.7Mpa		25Hz	25Hz	25Hz	25Hz
Recommended Rotation speed		20-35r/min	20-35r/min	20-35r/min	20-35r/min
Air consumption	1.0Mpa	9.0m3/min	9.0m3/min	9.0m3/min	9.0m3/min
	1.8Mpa	15.0m³/min	15.0m³/min	15.0m³/min	15.0m³/min
	2.4Mpa	23.0m³/min	23.0m³/min	23.0m³/min	23.0m³/min

bit sample.jpg

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