|Place of Origin:||Changsha,Hunan,China|
|Model Number:||SD12 DTH Bit|
|Minimum Order Quantity:||1|
|Packaging Details:||dth bits are packed by Woodens outer side, and Cartons inner side.|
|Delivery Time:||Shipped in 25 days after payment|
|Model:||SD12, Numa100, Numa120, DHD112||Processing Type:||Forging|
|Carbides Shape:||Spherical, Ballistic, Parabolic And Conical||DTH BIT Colo:||Black, Red, Gold, Blue, Grey And Etc|
|Bit Diameter:||305mm To 445mm||Matched Hammer:||SD12 DTH Hammer|
|Appliance:||Down The Hole Drilling,Mining,Quarry,Water Well Drilling||HS Code:||82071300|
SD12 305mm, 311mm, 330mm, 356mm, 381mm DTH Drill Bits
About Changsha Tianhe Drilling---
Manufacturer---rock drilling tools, like DTH hammers and bits, DTH drill pipes, RC hammers and bits, tophammer button bits, coupling, cross bits, drill rods located in Changsha, Hunan, China.
Experience--in this field of DTH hammers and bits for 20 years.
Export countries---our customers from all over the world, such as France, Spain, Italy, South Africa, Iran, Malaysia, Australia ad etc.
1. SD12 Bit specification
|Drill Bit||Bit Dia.(mm)||NO.Air||Gauge||Front||Weight(Kg)||Part No.|
2. Bit Face Shape Selection:
1) Drop Center Bit
----For high penetration rates in soft to medium hard and fissured rock formations.
2) Concave Face
----The all-around application bit face specifically for medium hard and homogeneous 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 theload and wear on the gauge buttons, but poor hole deviation control.
4 ) 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.
3. Carbide Button Shape Selection:
1. Semi-Ballistic Buttons
2. Ballistic Button
3. Spherical Button
4. Two-step Button