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High air pressure DTH bits

Product name:DHD350-152 High air pressureDTH bits
Dia.:115mm
Face shape:Flat face
Button shape:Domed/Round Button
Gauge button:7×14mm
Weight:9kg
Material:Carbon Steel

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DTH hammer tools

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Product Details

Description

Down-the-hole (DTH) hammer bits are used with Down-the-hole hammers for drilling holes through a wide range of rocks types. In conjunction with DTH hammers, drill hammer bits are designed with a spline drive for rotating the bit in the ground. Drill bits are available in different sizes and different styles so they can drill a wide range of hole sizes.

Faetures of High Air Pressure DTH Drill Bits
1.three basic DTH drill bit designs: Flat front, Convex, Concave. All shapes for all types of rock of hard, soft or abrasive.
2.Deliver maximum energy to DTH drilling bit, fast drilling speed and low air consumption due to inner structure of HD series DTH hammer designed according to newest rock drilling theory.
3.Smooth performance and long service life of DTH drill bits due to high quality alloy steel materials and advanced processing technology adapted.
4.Low problem rate and easy to maintenance due to simple , reliable and easy assemble and disassemble inner structure of DTH drill bits.
5.Easy to depart the dth bit from hammer due to multi-head thread connecting chuck and cylinder of hammer.

HENGLONG high air pressure DTH bits Face Shape Selection:

Face shape		Use condition
	Concave Face	the all-round application bit face specifically for medium hard and homogenerous rock formations.Good hole deviation control and good flushing capacity.
	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.
	Flat Face	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.

HENGLONG high air pressure DTH bits button Shape Selection:

Button shape		Use condition
	Domed/Round Button	Domed/Round Button are usually used as gauge buttons of DTH Bits,suitable for very abrasive and very hard formations.
	Parabolic/Semi-Ballistic Button	Parabolic Buttons are usually used as gauge buttons and front buttons of DTH Bits,suitable for medium abrasive and hard formations.
	Ballistic Button	Ballistic Bultons are usually used as front buttons of DTH Bits,suit-able for medium abrasive and medium hard formations.They can alsobe used as gauge buttons if the rock is soft
	Sharp Button	Sharp Buttons are usually used as front buttons of DTH Bits for softformations where fast penetration rates are possible and button bre-akage is minimal,
	Flat Button	Flat Buttons are usually used as protection buttons to reduce wear onrubbing surfaces of DTH Bits.

Performance

High Air Pressure DTH Drill Bits are produced from premium quality nickel-alloy steel for increased durability and wear characteristics. Specific heat treatment standards and special "stress relief" processes ensure consistent performance.
DTH hammer bits are designed for maximum performance and hole cleaning ability and high penetration rate.

Applications

High Air Pressure DTH Drill Bits are used mining industry, energy, metallurgy, geology, coal, water conservancy, chemical industry and road construction.

Specification

DHD3.5	直径Dia(mm)	边齿Gauge button	重量Weight(Kg)	件号Part No.

	85	6xφ13	4.2	DHD3.5-85

	90	6xφ14	4.5	DHD3.5-90

	95	6xφ14	4.8	DHD3.5-95

	100	6xφ14	5.0	DHD3.5-100

	105	6xφ14	5.5	DHD3.5-105

QL30	直径Dia(mm)	边齿Gauge button	重量Weight(Kg)	件号Part No.


	85	6xφ13	4.5	QL30-85


	90	6xφ14	4.7	QL30-90

	95	6xφ14	4.9	QL30-95

	100	6xφ14	5.0	QL30-100

	105	6xφ14	5.5	QL30-105
				4"Bits
DHD340A、COP44	直径Dia(mm)	边齿Gauge button	重量Weight(Kg)	件号Part No.
	105	6xφ14	8.5	DHD340-105
	110	7xφ14	8.8	DHD340-110
	115	7xφ14	9.0	DHD340-115
	120	8xφ14	9.8	DHD340-120
	127	8xφ14	11.0	DHD340-127
QL40	直径Dia(mm)	边齿Gauge button	重量Weight(Kg)	件号Part No.
	105	6xφ14	9.0	QL40-105
	110	7x014	9.2	QL40-110
	115	7xφ14	9.5	QL40-115
	120	8xφ14	10.3	QL40-120
	127	8xφ14	11.5	QL40-127
				5"Bits
DHD350R、COP54	直径Dia(mm)	边齿Gauge button	重量Weight(Kg)	件号Part No.
	135	7xφ18	15.0	DHD350-135
	140	7xφ18	16.0	DHD350-140
	146	7xφ18	17.0	DHD350-146
	152	8xφ18	17.5	DHD350-152
	165	8xφ18	18.5	DHD350-165
QL50	直径Dia(mm)	边齿Gauge button	重量Weight(Kg)	件号Part No.
	135	7xφ18	15.5	QL50-135
	140	7xφ18	16.0	QL50-140
	146	7xφ18	16.5	QL50-146
	152	8xφ18	17.0	QL50-152
	165	8xφ18	18.0	QL50-165
				6"Bits
DHD360、COP64	直径Dia(mm)	边齿Gauge button	重量Weight(Kg)	件号Part No.

	152	8xφ18	22.0	DHD360-152
	165	8xφ18	26.0	DHD360-165
	171	8xφ18	27.0	DHD360-171
	190	9xφ18	28.5	DHD360-190
	203	9xφ18	29.5	DHD360-203
QL60	直径Dia(mm)	边齿Gauge button	重量Weight(Kg)	件号Part No.

	152	8xφ18	24.0	QL60-152
	165	8xφ18	25.0	QL60-165
	171	8xφ18	27.0	QL60-171
	190	9xφ18	29.0	QL60-190
	203	9xφ18	33.0	QL60-203

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QUALITY INSPECTION PROCESS

Product quality is one of the core links in the development and growth of Yanggu Henglong Engineering Co., Ltd. Our company has strict internal and external inspection processes to ensure the quality of our products. Our inspection process for our products is as follows.

DTH hammer tools