Numa120 305mm, 311mm, 330mm, 356mm, 381mm DTH Button Bits for Big Size Water Well Hole Drilling

• Customized: Customized
• Standard: JIS, AISI, API
• Length: Jobber-length
• Type: Core Drill Bit
• Material: Diamond
• Usage: Wood Drilling, Well Drilling, PCB Drilling, Metal Drilling, Masonry Drilling
• Model NO.: ROS120
• Model: Numa 100 DTH Hammer Bit
• Item: Down The Hole Drilling, DTH Drilling
• Buttons: Tungsten Carbide Buttons
• Machine: Down The Hole Drilling Tools
• Name: Down The Hole Button Bits
• Use: Rock Drilling
• Supplier: China Down-The-Hole Drill
• China: China Down Hole Tools
• Model No: Conventional Hammers & Bits
• Hammer: Numa Hammers
• Transport Package: Wooden Box
• Specification: 60cm
• Trademark: ROSCHEN
• Origin: China
• HS Code: 84314320
• Production Capacity: 1600

Product Description

DOWN-THE-HOLE BITS  
                   
Roschen DTH drill bits are fitted with our cemented carbide inserts, which provide you with superior life and drilling productivity.

The Roschen DTH button bit designs are well known and extensively used around the world. Whatever conditions you're dealing with, our drill bits make the job easier. They are fitted with Roschen's proprietary cemented carbide buttons, which are designed to drill further. The drill bit bodies are made from precision hardened nickel molybdenum steel, with a compound curve shape for faster and smoother cutting and easier removal of cuttings.

The bits in the new range have an optimized head length with maximized steel support for the cemented carbide buttons, deep face grooves for excellent flushing and an aggressive cutting structure.

Advantages: 
1. Proprietary Sandvik carbide ensures high quality and performance
2. Carbide grade options for long life in challenging applications
3. Face designs to maximize penetration rate and tool life
4. Optimized flushing designs to aid in cuttings removal and reduce wear
                  

Roschen Premium Quality Button Bits:

Roschen Button Bits range covers hole diameter 3" and upwards upto 24". Roschen DTH Button Bits are available for all Major DTH Hammer Brands.  

DHD-3.5, Cop-34, M-30, A34-15
Panther, DHD -14, DH4, DHD-4,DHD-34OA, Cop-42, Cop-44, Mission 40, SD-4, QL-4, Secoroc-4", Numa-4
DHD-16, DHD-160, DHD-360, QL-60, Mission 60, SD-6, Cop-62,Cop-64,Secoroc-6", Numa-6"
SD-8, DHD-380, COP-84, SECOROC-8", NUMA-8, Mission 80
SD-10, NUMA-100
SD-12, NUMA-120

Special Features:

1. Computer analysis and laboratory trials have been used to optimize the number of buttons as well as their size and positioning throughout the bit front.
2. Carbide has been carefully designed to minimize the risk of button loss and button failure
3. The design of the bit body and the frontal sludge grooves provides uniform flushing with reduces steel wash on both bit and the hammer.
4. Material processes and multiple heat treatment have focussed on achieving maximum resistance to fatigue failure.
5. Special bit designs such as Concave and Convex/CB are available on request.



Product specifications:

For 12" hammer DTH bits shank	Bit Dia.		No. Air Holes	Gauge Buttons	Front Buttons	Weight (Kg)	Part No.
	mm	inch
DHD1120	305	12"	4	12×φ18	36×φ16	152	DHD1120-305
	311	12 1/4"	4	12×φ18	36×φ16	157	DHD1120-311
	330	13"	4	16×φ18	42×φ16	165	DHD1120-330
	356	14"	4	16×φ19	48×φ16	178	DHD1120-356
	381	15"	4	16×φ19	48×φ18	198	DHD1120-381
SD12	305	12"	4	12×φ18	36×φ16	156	SD12-305
	311	12 1/4"	4	12×φ18	36×φ16	168	SD12-311
	330	13"	4	16×φ18	42×φ16	180	SD12-330
	356	14"	4	16×φ19	48×φ16	191	SD12-356
	381	15"	4	16×φ19	48×φ18	200	SD12-381
NUMA120	305	12"	4	12×φ18	36×φ16	152	NUMA120-305
	311	12 1/4"	4	12×φ18	36×φ16	158	NUMA120-311
	330	13"	4	16×φ18	42×φ16	165	NUMA120-330
	356	14"	4	16×φ19	48×φ16	178	NUMA120-356
	381	15"	4	16×φ19	48×φ18	195	NUMA120-381
NUMA125	305	12"	4	12×φ18	36×φ16	170	NUMA125-305
	311	12 1/4"	4	12×φ18	36×φ16	173	NUMA125-311
	330	13"	4	16×φ18	42×φ16	182	NUMA125-330
	356	14"	4	16×φ19	48×φ16	191	NUMA125-356
	381	15"	4	16×φ19	48×φ18	200	NUMA125-381

ROSCHEN  hammer bit technical data:

ROSCHEN DTH Bits Specifications
Hammer  Size	Bits diameter		Shank	ROSCHEN CODE
	Metric	Inch
1"	64mm-70mm	2 1/2"-2 3/4"	BR1	ROS 11
2"	70mm-95mm	2 3/4"-3 3/4"	MACH20/BR2	ROS 22
3"	90mm-102mm	3 1/2"-4"	COP32/COP34/MACH303	ROS 32
			M30/DHD3.5/BR3	ROS 34
4"	105mm-152mm	4 1/8"-6"	COP44/DHD340/MACH44	ROS 42
			SD4/M40/QL40	ROS 44
5"	133mm-165mm	5 1/4"-6 1/2"	COP54/DHD350R/MACH50	ROS 52
			SD5/M50/QL50/BR5	ROS 54
6"	152mm-254mm	4 1/8"-10"	COP64/DHD360/SD6	ROS 62
			M60/QL60/Bulroc BR6	ROS 64
8"	203mm-330mm	8"-13"	COP84/DHD380/SD8	ROS 82
			QL80/M80/M85	ROS 84
10"	254mm-380mm	10"-15"	SD10	ROS 100
			NUMA100
12"	305mm-508mm	12"-20"	DHD1120/SD12	ROS 120
			NUMA120/NUMA125
Notes:
Metzke, Remet thread is available!
Any special size of DTH bits will be available by requests.

Shank can be available:

1), Dia. 64mm-70mm shank Bulroc BR1
2), Dia. 70mm-95mm shank Halco MACH20, Bulroc BR2
3), Dia. 90mm-102mm shank COP32, COP34, Halco MACH303, M30, DHD3.5, Bulroc BR3
4), Dia. 105mm-152mm shank COP44, DHD340, Halco MACH44, SD4, M40, QL40, Bulroc BR4
5), Dia. 135mm-165mm shank COP54, DHD350R, COP54, Halco MACH50, SD5, M50, QL50, Bulroc BR5
6), Dia. 152mm-254mm shank COP64, DHD360, SD6, M60, QL60, Bulroc BR6
7), Dia. 203mm-330mm shank COP84, DHD380, SD8, QL80
8), Dia. 254mm-380mm shank SD10, Numa100
9), Dia. 305mm-508mm shank DHD1120, SD12, N120, N125
10), Dia. 405mm-864mm shank SD15, SD18
11), VKP80, VKP95, CIR90, CIR100, CIR110, CIR150, CIR200...


We can also provide related products DTH hammers, ODEX system, symmetrix systems, slide block drilling systems, etc and DTH drilling pipes for various thread API REG, API IF, BECO, etc


Product photos



Quality warranty:
Our products are made of high quality steel and all spares parts are inspected strictly before shipping. We have quickly responses for your complaint and suggestion.

Package:
Using ply-wooden cases and pallet for package to protect the products and avoid the damagement during transportation. Also we can customize package according to your special requests.

Production time:
Generally need 15-25 days

Transportation:
By air, By Express or By sea according to your requests.









FAQ 

Q: Are you a manufacturer or trading company ?
A: We are a specialized manufacturer.

Q: How about the delivery terms ?
1. Payment: T/T, L/C, Western Union, Paypal, 30% deposit in advance and rest before delivery.
2. Min. order quantity: 1 piece.
3. Transportation: By DHL/TNT/Fedex express, air, sea, train.

Q: How about discount ?
A: Price is based on products and order quantity.

Q: Do you accept sample order?
A: Yes sure, please contact us for details.

Q: How about your after-sales service?
A: As a manufacturer, we offer promt technology support for all problems and questions. Besides, we accept goods return or replace for quality problem.



For more information, please contact:
                                                                    


ROSCHEN INC.
ROSCHEN GROUP LIMITED
ROSCHEN HOLDINGS LIMITED      
 
 
 
 
Website: http://roschen.en.made-in-china.com ; http://roschen.en.made-in-china.com