ROTARY PERCUSSIVE DRILLING (DOWN-THE-HOLE HAMMER)
ROTARY PERCUSSIVE DRILLING (DOWN-THE-HOLE HAMMER)

ROTARY PERCUSSIVE DRILLING (DOWN-THE-HOLE HAMMER)

USD $10000 - $15000 /Piece

Min.Order:1 Piece

Supply Ability:
50 Piece / Pieces per Month
Port:
shanghai
Payment Terms:
T/T L/C
Delivery Detail:
5 days

Quick Details View All >

Brand Name:
zhongtuo
Place of Origin:
China
Model Number:
Q-100

Shaanxi Zhongtuo Mine Equipment Co.,Ltd

Business Type: Manufacturer
Xi'an Shaanxi China
Main Products: Concrete splitter ,Bridge tensioning equipment ,DTH drill ,Cement mortar pump , Automatic rebar bending machine , Shotcrete equipment , Mud pump drilling ,Section bending machine

Product Details

Description of down the hole hammer drilling

With down the hole hammer drilling, the drill principle consists of a combination of percussion and rotation. Unlike the top hammer, here the hammer drill is located directly in the borehole. These devices, known as ‘down-the-hole hammers’, are connected to the rotating drill pipes.

The down the hole hammer drilling is driven directly by the flushing medium. Compressed air is usually used for this purpose. Special procedures, though, can also involve flushing with water. The flushing medium is pressed through the drill pipes, down-the-hole hammer and drill bit and is forced back out at the mouth of the borehole, along with the loosened drill cuttings, through the annular gap between the drill pipes and the borehole wall.

Down-the-hole hammers are mainly used for drilling boreholes into hard rock in bedrock. These boreholes serve as anchor holes, blast holes, injection holes and pilot holes.

In the field of anchoring technology, this process can be used to produce both short- and long-term anchors. Typical applications include:

down the hole hammer drilling-44a    down the hole hammer drilling-33a


Parameters of of down the hole hammer drilling

down the hole hammer drilling-22a


Contact Supplier

Ms. Jessie hu sales manager Chat Now
Telephone
86-029-62322708
Mobile
86-13571973823
Address
No.27, Beichen Village Industrial Park, Weiyang District, Shaanxi Province Xi'an,Shaanxi

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