12′ ′ -305mm DTH Rocking Drill Bits

• After-sales Service: Yes
• Warranty: Yes
• Material: Carburized Steel
• Color: You Wanted
• Application: Water Well Drilling or Mining
• Air Pressure: High Air Pressure
• Model NO.: 12′′-305mm
• Advatage: High Performance and Long Service Life
• Transport Package: Plywood Box
• Specification: 12′′ -305mm DTH Bits
• Trademark: SOLLROC
• Origin: Made in China
• HS Code: 82071300
• Production Capacity: 10000/Month

Product Description

Product Introduction
DTH drilling tool is a kind of drilling system which uses compressed air as motivation, makes drilling impact motivation parts down the hole, to control the piston reciprocating motion by the distribution device in the hammer, and then impacts the DTH bit in the front of the hammer to transit the impacting power to the bit. The DTH bit in the front of the hammer breaks the rock to drill hole.
Sollroc drilling tools are fitted with proprietary cemented carbide buttons, which are designed to drill further and last longer. With a unique combination of strength, hardness and resilience, Sollroc bits can tackle even the most demanding applications.

Product Adavantages
1.Strict quality controlling
2.Simple and reasonable design, Low problem rate
3.Selected high quality special steels and carbide
4.Produced by CNC machines
5.Low air consumption, smooth drilling, Maximum impact power, High penetration rate

Specification
12'' DTH Bits

Bit diameter		Flushing holes No.*Button Dia. mm	No.*Button Dia. mm		Weight (kg)
mm	inch		Gauge Buttons	Front Buttons
305	12"	3*Ф32	15*Ф19	27*Ф18+9*Ф16	130
311	12 1/4"	3*Ф32	15*Ф19	27*Ф18+9*Ф16	132
330	13''	3*Ф32	15*Ф19+12*Ф19	27*Ф18+16*Ф16	145
356	14''	4*Ф28	16*Ф19+16*Ф19	28*Ф18+20*Ф16	162
381	15''	4*Ф28	16*Ф19+12*Ф19	42*Ф18	187

Face shape selection
1. Drop Center Bit
For high penetration rates in soft to medium hard and fissured rock formations. Low to medium air pressures. Maximum hole deviation control.
2. Concave Face
The all-round application bit face specifically for medium hard and homogenerous rock formations. Good hole deviation control and good flushing capacity.
3. 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.
4. Double Gauge Face
This kind of face shape is suitable for fast penetration rates in medium to hard rock formations. Designed for high air pressures and good resistance to steel wash step gauge bit.
5. 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.

About us
Sollroc is specialized in designing, manufacturing and developing equipments and accessories for standard models as well as the special needs of clients and provides them with the best suggestions and solutions. We practice strict and stringent quality control during manufacturing and adhered to recognized and approved quality control systems. Each of our products follows the quality requirements and procedures to ensure finished products are durable and superior up to standard.
Our variety of Down the Hole drill bits is manufactured using high quality materials to provide you with a fine balance between penetration capability and bit life. We offer a comprehensive range of standard and made to order drill bits on an extensive selection of shanks with a wide variety of head designs to suit every project.
Sollroc DTH bits are interchangeable with these famous bits with CIR, Mission,  DHD, SD, QL etc. series shank.

Delivery Time
Generally need 15-25 days

Transport Way
By air, By Sea or By Express

Detail photos