|Place of Origin:||China|
|Model Number:||DHD NUMA TH SD QL|
|Minimum Order Quantity:||1|
|Packaging Details:||Wooden Case|
|Payment Terms:||T/T O/A WEST UNION|
|Supply Ability:||220 Pcs Per Month|
|Material:||Alloy Steel||Processing Type:||Forging|
|Use:||Construction, Foundation Drilling, Oil And Gas, Water Well Drilling||Product Name:||DHD NUMA TH SD QL|
|Color:||Gold Other Color Available||External Diameter:||220mm-650mm|
Construction, Foundation Drilling, Oil and Gas, Water well Drilling DTH Hammmer with OD 220MM-650MM
"Down The Hole" (DTH) hammers offers an extensive range of DTH hammers suitable for a wide variety of drilling techniques and environments.
Our designed for drilling piles in complex conditions with rock layers and hard boulders including hardest bed rock.
1. Advantages of construction method
Use:DTH Hammer drilling is a good way to drill through cave formation and avoid stuck problem
Cave:When encountering caves,drill bit inclines to the cave.The stabilizer ensures the hole straightness
Bit stuck；One reason is cave encounter,the drill bit deviates,and the entire set of drilling tools inclines in the hole.The other,is hole collapse.A large number of rock or clay catch the drill pipe,resulting in bit stuck.Steel casing and stabilizer can resolve this problem.
2. Detailed structure information
|Weight (less bit)||320kg||675kg||850kg||1530kg||2540kg||4236kg|
|Connection thread||API 5 1/2"Reg Pin||API 6 5/8"Reg Pin||API 7 5/8"Reg Pin||273mm or 320mm Hexagonal||320mm Hexagonal||320mm Hexagonal|
* Hammers without footvalve are available.
* External diameter of hammer is adjustable according to customers' requests.
* Shock absorbers and Hexagonal Joints are available.
3. Product Application