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DTH hammers selector reference
Date:2018/9/27 10:16:43


Prospecting project / Geotechnical drilling engineering Reference for pneumatic impactor selection table

       

DTH Hammer is the main drilling tool for DTH hammer drilling, and its performance directly affects drilling efficiency. Hunan New Diamond Construction Machinery Co., Ltd. attaches great importance to the study of the performance of the impactor, solves many key technical problems, and greatly improves the performance of the impactor. There are many series of products developed, which are suitable for deep hole, low consumption and low pressure medium and high pressure products. Most of them are valveless structure, with few internal parts, simple structure, strong and easy to use.

From the perspective of application in recent years. The products of Hunan New Diamond Construction Machinery Co., Ltd can basically meet the engineering needs, and the price is cheaper than that of foreign countries. In addition, increasing the air pressure can improve the drilling efficiency, which is also the reason for domestic and foreign efforts to develop high air pressure impactors. For construction units, the selection of high wind pressure or low wind pressure impactor depends on the actual situation. When conditions permit, high wind pressure impactor should be selected as far as possible, but the price of high wind pressure and low wind pressure of impactor with the same specifications is quite different, so attention should be paid to the selection.


       

Matching table for pneumatic downhole impactor of Hunan new diamond engineering machinery Co., Ltd.


DTH Hammer

Product model

Working Pressure/Mpa

Air Consumption/m3 min

External Diameter/mm

Hole Range/mm

Connection Thread

Middle-Low Air Pressure

BR

BR1A

1.0-1.5Mpa

0.7Mpa:1.5m^3/min

1.0Mpa:2.5m^3/min

1.4Mpa:3.0m^3/min

O54mm

O64-O76mm

Br40,BOX

BR2A

1.0-1.5Mpa

0.7Mpa:2.5m^3/min

1.0Mpa:4.0m^3/min

1.4Mpa:5.0m^3/min

O62mm

O70-O90mm

Rd50,BOX

BR3A

1.0-1.5Mpa

0.7Mpa:4.0m^3/min

1.0Mpa:6.0m^3/min

1.4Mpa:8.0m^3/min

O82mm

O90-O110mm

API2 3”/8REG



DTH Hammer

Product model

Working Pressure/Mpa

Air Consumption/m3 min

External Diameter/mm

Hole Range/mm

Connection Thread

High Air Pressure Without Foot Vale

ND

ND55C(A)

1.3-2.3Mpa

1.0Mpa:8.0m^3/min

1.8Mpa:6.0m^3/min

2.4Mpa:19.0m^3/min

O126mm

O135-O155mm

API2 3”/8REG

API3 1”/2REG

API2 7”/8REG

ND65A

1.5-3.0Mpa

1.0Mpa:9.0m^3/min

1.8Mpa:18.0m^3/min

2.4Mpa:26.0m^3/min

O142/O146mm

O155-O203mm

API3 1”/2REG

ND75A

1.5-3.0Mpa

1.0Mpa:11.0m^3/min

1.8Mpa:20.0m^3/min

2.4Mpa:28.0m^3/min

O165mm

O175-O216mm

API3 1”/2REG

ND85A

1.5-3.0Mpa

1.0Mpa:12.0m^3/min

1.8Mpa:22.0m^3/min

2.4Mpa:28.0m^3/min

O180/O185mm

O195-O254mm

API4 1”/2REG

ND1120A

2.0-3.5Mpa

1.0Mpa:28.0m^3/min

1.8Mpa:50.0m^3/min

2.4Mpa:71.0m^3/min

O275mm

O305-O445mm

API6 5”/8REG

NQL

NQL4A

1.2-2.0Mpa

1.0Mpa:5.0m^3/min

1.8Mpa:9.0m^3/min

2.4Mpa:14.0m^3/min

O99mm

O110-O135mm

API2 3”/8REG

NQL5A

1.3-2.3Mpa

1.0Mpa:7.0m^3/min

1.8Mpa:14.0m^3/min

2.4Mpa:19.0m^3/min

O126 mm

O155-O203mm

API2 3”/8REG

API3 1”/2REG

API2 7”/8REG

NQL6A

1.5-2.5Mpa

1.0Mpa:9.0m^3/min

1.8Mpa:18.0m^3/min

2.4Mpa:26.0m^3/min

O165mm

O155-O203mm

API3 1”/2REG

NQL8A

1.5-3.0Mpa

1.0Mpa:12.0m^3/min

1.8Mpa:22.0m^3/min

2.4Mpa:28.0m^3/min

O180/O185mm

O195-O254mm

API4 1”/2REG

NQL95A

1.8-3.0Mpa

1.0Mpa:16.0m^3/min

1.8Mpa:28.0m^3/min

2.4Mpa:39.0m^3/min

O203mm

O216-O254mm

API4 1”/2REG

NSD

NSD4A

1.2-2.0Mpa

1.0Mpa:6.0m^3/min

1.8Mpa:9.0m^3/min

2.4Mpa:14.0m^3/min

O99mm

O110-O135mm

API2 3”/8REG

NSD5A

1.3-2.3Mpa

1.0Mpa:7.0m^3/min

1.8Mpa:14.0m^3/min

2.4Mpa:19.0m^3/min

O126mm

O155-O190mm

API2 3”/8REG

API3 1”/2REG

API2 7”/8REG

NSD6A

1.5-2.5Mpa

1.0Mpa:9.0m^3/min

1.8Mpa:18.0m^3/min

2.4Mpa:26.0m^3/min

O146mm

O155-O203mm

API3 1”/2REG

NSD8A

1.5-3.0Mpa

1.0Mpa:12.0m^3/min

1.8Mpa:22.0m^3/min

2.4Mpa:28.0m^3/min

O180/O185mm

O195-O254mm

API4 1”/2REG

NSD10A

2.0-3.5Mpa

1.8Mpa:14.0m^3/min

2.4Mpa:65.0m^3/min

O226mm

O254-O311mm

AP6 5”/8REG

NSD12A

2.0-3.5Mpa

1.0Mpa:28.0m^3/min

1.8Mpa:50.0m^3/min

2.4Mpa:71.0m^3/min

O275mm

O305-O445mm

API6 5”/8REG



DTH Hammer

Product model

Working Pressure/Mpa

Air Consumption/m3 min

External Diameter/mm

Hole Range/mm

Connection Thread

High Air Pressure

With Foot Valve

No bottom Valve

ND

ND35

1.0-1.5Mpa

1.0Mpa:4.5m^3/min

1.5Mpa:9.0m^3/min

O82mm

O90-O110mm

API2 3”/8REG

ND45

1.2-2.0Mpa

1.0Mpa:6.0m^3/min

1.8Mpa:10.0m^3/min

2.4Mpa:15.0m^3/min

O99mm

O110-O135mm

API2 3”/8REG

ND55

1.3-2.3Mpa

1.0Mpa:9.0m^3/min

1.8Mpa:15.0m^3/min

2.4Mpa:23.0m^3/min

O126mm

O135-O155mm

API2 3”/8REG

API3 1”/2REG

API2 7”/8REG

ND55C

1.3-2.3Mpa

1.0Mpa:9.0m^3/min

1.8Mpa:15.0m^3/min

2.4Mpa:23.0m^3/min

O126mm

O135-O155mm

API2 3”/8REG

API3 1”/2REG

API2 7”/8REG

ND65

1.5-2.5Mpa

1.0Mpa:10.0m^3/min

1.8Mpa:20.0m^3/min

2.4Mpa:28.5m^3/min

O142mm O144mm

O146mm O148mm

O155-O190mm

API3 1”/2REG

ND85

1.5-3.0Mpa

1.0Mpa:15.0m^3/min

1.8Mpa:26.0m^3/min

2.4Mpa:34.0m^3/min

O180mm/O185mm

O195-O254mm

API4 1”/2REG

ND1120

2.0-3.5Mpa

1.0Mpa:30.0m^3/min

1.8Mpa:56.0m^3/min

2.4Mpa:78.0m^3/min

O275mm

O305-O445mm

API6 5”/8REG

NQL

NQL4

1.2-2.0Mpa

1.0Mpa:6.0m^3/min

1.8Mpa:10.0m^3/min

2.4Mpa:15.0m^3/min

O99mm

O110-O135mm

API2 3”/8REG

NQL5

1.3-2.3Mpa

1.0Mpa:9.0m^3/min

1.8Mpa:15.0m^3/min

2.4Mpa:23.0m^3/min

O126mm

O135-O155mm

API3 1”/2REG

API2 7”/8REG

NQL6

1.5-2.5Mpa

1.0Mpa:10.0m^3/min

1.8Mpa:20.0m^3/min

2.4Mpa:28.5m^3/min

O142mmO144mm

O146mmO148mm

O155-O190mm

API3 1”/2REG

API2 7”/8REG

2 7”/8 IF

NQL8

1.5-3.0Mpa

1.0Mpa:15.0m^3/min

1.8Mpa:26.0m^3/min

2.4Mpa:34.0m^3/min

O180mm

O195-O254mm

API4 1”/2REG

NSD

NSD4

1.2-2.0Mpa

1.0Mpa:6.0m^3/min

1.8Mpa:10.0m^3/min

2.4Mpa:15.0m^3/min

O99mm

O110-O135mm

API2 3”/8REG

NSD5

1.3-2.3Mpa

1.0Mpa:9.0m^3/min

1.8Mpa:15.0m^3/min

2.4Mpa:23.0m^3/min

O126mm

O135-O155mm

API3 1”/2REG

API2 7”/8REG

NSD6

1.5-2.5Mpa

1.0Mpa:10.0m^3/min

1.8Mpa:20.0m^3/min

2.4Mpa:28.5m^3/min

O142mmO144mm

O146mmO148mm

O155-O190mm

API3 1”/2REG

NSD8

1.5-3.0Mpa

1.0Mpa:15.0m^3/min

1.8Mpa:26.0m^3/min

2.4Mpa:34.0m^3/min

O180mm/O185mm

O195-O254mm

API4 1”/2REG

NSD10

2.0-3.5Mpa

1.0Mpa:22.0m^3/min

1.8Mpa:40.0m^3/min

2.4Mpa:55.0m^3/min

O226mm

O254-O311mm

API4 1”/2REG

API6 5”/8REG

NSD12

2.0-3.5Mpa

1.0Mpa:30.0m^3/min

1.8Mpa:56.0m^3/min

2.4Mpa:78.0m^3/min

O275mm

O305-O445mm

API6 5”/8REG


Note: Due to the large number of models and specifications for the production of down-the-hole hammers, some of the products listed in the table are for reference only.






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