SHANDIKE Hexagonal drill rods(Drifting Drill Rod, MF Drill Rod)

Hexagonal drill rods are produced by CNC machining and advanced heat treatment on the base of the same steels as Sandvik.

Parameters

• Thread size: R22, R25, R28, SSR28, R32, SSR32, R35, SSR35, R38, T38, other.

• Rod size: Hex.22, Hex.25, Hex.28, Hex.32, Hex.35.

• Length: 2100mm to 6095mm.

Features

• Carburizing process is applied to promote surface hardness, thus grant better wearing quality and lifespan for the drill rods;

• 23CrNi3Mo, which is in same league as Sandvik Sandbar 64, is applied as drill rod material.

• Cost-effective, good performance with reasonable price.

• Complete types of drill rod for various drilling scenarios.

Applications

Drilling duties in tunneling, construction, mining, quarrying, etc.

Specifications

Drifting and Tunneling Rod / MF(Speed) Rod

SHANDIKE Round Extension Drill Rods

Made from the same steels as Sandvik, produced by CNC machining and advanced heat treatment.

The threaded drill rods, working with hydraulic drill rigs and hydraulic jumbos, have main threads of R22，R25，R28，R32，TR35，T38，T45，T51，ST58，ST68 and T60.

Features

• Carburizing process is applied to promote surface hardness, thus grant better wearing quality and lifespan for the drill rods;

• 23CrNi3Mo, which is in same league as Sandvik Sandbar 64, is applied as drill rod material.

• Cost-effective, good performance with reasonable price.

• Complete types of drill rod for various drilling scenarios.

Applications

The threaded drill rods are divided into MF rods and extension rods, which are widely used in open-pit mining, underground mining, tunneling, anchoring, furnace tapping, tunnel construction, hydropower engineering, quarrying and construction.

SHANDIKE is the first Chinese factory to manufacture drill rods and ranks the forefront in the industry in China regarding quality, sales volume, export volume, specification varieties and matching capacity.

Specifications

Bench and Production Rods, Extension Rods, MF(Speed) Rods

Introduction to thread button bits

Threaded drill bits are also knowm as button bits which conmect with threaded dri11 rods by threads to transfer impactpower and rotation torque for breaking rocks, The threaded dri11 bits, working with hydraulic dri11 rigs and hydraulic jumboshave main threads of R22, R25,R28, R32, TR35, T38, T45, T51, ST58, ST68, EL60, EL68 and T60.

Materials and craftsmanship

Material: premium alloy steels

Insert Tech: hot-pressed carbide inserts

Face Type: Flat front( for drilling in medium to hard and abrasive rock formations

Drop center front( Reduced hole deviation for drilling in medium-hard rock formations)

Button Type: Hemispherical/Parabolic/Ballistic / Conical

Color: Green, Orange, Gold, Black or based on customer requirements.

Processing: CNC milling and proprietary heat treatment process

Features

Alloy buttons are hot mounted into the drill bit, ensuring the bit good accuracy and durability;
Reliability ensured by premium drill bit materials and premium alloy button;
Different types designed for different drilling scenarios and rock conditions;
High speed and drilling efficiency;
Cost-effective, good performance with reasonable price.

Application

Threaded drill bits are widely used in openpit mining, underground muning,tumeling, anchoring, furmace tapping, tunnel construction, hydropower engineering, quarrying and construction.

Specifications

Top hammer shank adaptors, the role of which in rock drilling is to directly bear the impact energy and torque of the rock drill, and is used to transfer the energy from drill rig to drill rod. One end of the shank adaptor is connected to drill rig, and another end is connected to drill rod, so that the energy of drill rig can be transmitted to drill bit, and finally achieve the purpose of drilling.

The specification and hardness of top hammer shank adaptor have a great influence on the rock drilling speed and the life of the rock drill. The hardness of the top hammer shank adaptors for drill should be appropriate, the service life is short if the rock drill shank is too soft, the piston is vulnerable to damage if the drill shank adapter is too hard. Shandike shank adaptor factory has accurate specifications, smooth surface, suitable hardness, the cross-section is perpendicular to the axis, and closely coincides with rock drill sleeve. 

Different Types Of Shandike Drill Shank Adapter

Shandike offers male and female threaded shank adapter, also called striking bar or shank rod, such as T38 shank adapter, T45 shank adapter, T51 shank adaptor, etc. Our China shank adapters are suitable for various brands of rock drills, such as Atlas Copco, Sandvik, Furukawa, Montabert, Ingersoll-Rand, Tamrock, etc., and the rock drill shank adapter (drill shank adaptor) also can be designed according to customer needs.

Parameters

• Thread type: R25, R28, R32, R35, R38, T38, T45, T51, etc.

• Diameter: 32mm-70mm

• Length: 273mm-885mm

• Applicable rock drill brand: Atlas Copco, Tamrock, Ingersoll Rand, Boart Longyear, Furukawa, Montabert, Soonsan, Everdigm, etc.

Applications

Drilling works for blasting duties in tunneling, construction, mining, quarrying, etc.

Specifications

Rock Drill	Shank Adapters	Thread	Length (mm)
Atlas Copco  COP1036/1238/1038HB		R32 T38 T45	500 500 500
Atlas Copco  COP1432/COP1532/ COP1440/COP1838HD/ME		R32 R38 T38 R32 TC35 T38 R32 R35 R38 T45 T51	435 435 435 525 525 525 525 525 525 525 525
Atlas Copco  COP1440/COP1550/COP1838		R32 R38 T38 R38 T38 R32 TC35 R38 T38	435 435 435 455 455 525 525 525 525
Atlas Copco COP1840EX/COP1850EX		T38 T45 T51	770 770 770
Atlas Copco COP1840/COP1850		T45 T51	565 565
Tamrock HL300		R32	400
Tamrock HL500-45/510-45		R32 T38 T45	550 550 550
Tamrock HLX5/HLX5T		R32 R38 T38 R32 T38 T45	500 500 500 575 575 575
Tamrock HL650-45/700-45/700T-45/ 710-45/800T-45		T38 T45	600 600
Tamrock HL1000/HL1010/HL1000S/ HL1010S-52		T45 T51 T45 T51	670 670 590 590
Furukawa HD609		T38 T38 T45	620 690 620
Furukawa HD612		T38 T45 T45	710 710 720
Furukawa HD709		T38	620
Furukawa HD712		T45 T51 T45 T51	590 590 790 790
Montabert HC40		R32 R38	447 447
Montabert HC80, HC120		T45	490
Ingersoll-Rand URD475/URD550/VL120/ EVL130/VL140		R32 R32 T38 T45	330 380 380 380
Ingersoll-Rand YH65/YH80		T38 T45	500 500
Ingersoll-Rand YH65RP/YH70RP/ YH75RP/YH80RP		T38 T45	700 700

Rock Drill MF Rod (commonly referred to as Speed Drill Rod) features a male-female threaded configuration, with a male thread at one end and a female thread at the opposite end. This design enables direct coupling with the shank adapter without requiring an additional sleeve connector, thereby resolving the inherent issue of vibration-induced instability in traditional equal-diameter threaded joints. The optimized rapid transition mechanism between male and female threads enhances tool-change efficiency during drilling operations, significantly improving overall operational productivity.  

1、Structural Features and Engineering Advantages

• This series of drill rods incorporates a patented differential-diameter thread connection system, featuring an asymmetric progressive thread design at the male (external) and female (internal) ends. Key innovations compared to conventional equal-diameter thread systems include:
• Torque transmission efficiency reaching 98.6% (per ASTM A919 testing protocols).
• Direct integration with shank adapters, eliminating the need for coupling sleeves.
• 30° tapered thread engagement surfaces, increasing contact area by 40%.
• Vibration damping coefficient enhanced to 0.85 (ISO 3408 compliant).

2. Manufacturing Processes and Material Properties  

As an ISO 9001:2015-certified manufacturer, we operate two fully automated production facilities in China, equipped with:  

• Vacuum degassing/oxygen decarburization (VD/VOD) refining furnaces  
• 5-axis CNC thread machining centers  
• Optical emission spectrometers (OES) for full-spectrum analysis  

Our rods are fabricated from modified AISI 4140 Cr-Mo-V alloy steel (ASTM standard), subjected to a triple heat treatment process:  

• 1. Normalization  
• 2. Quenching and tempering  
• 3. Surface nitriding  

Resulting in critical performance metrics:  

• Surface hardness: 58-62 HRC  
• Core toughness: ≥45 J (Charpy impact test)  
• Tensile strength: ≥1100 MPa  
• Fatigue endurance: >10⁶ cycles (EN 10089 compliant)  

 3. Product Matrix and Technical Parameters  

We supply a full range of quick-change drill rods compliant with ISO 1718 and DIN 2050 standards, covering mainstream specifications:  

 3.1 Rock Drilling Series  

• R23MF: Applicable bore diameter Φ76-89mm  
• R32MF: Torque capacity 3200 N·m  
• R38MF: Bend resistance class B  

 3.2 Tunnel Engineering Series  

• T35MF: Maximum drilling depth 35m  
• T38MF: Anti-galling coating applied  
• T45MF: Dual coolant channel design  

 3.3 Deep-Hole Drilling Series  

• GT60MF: Suitable for >200m boreholes  
• SR35: Hydrogen embrittlement-resistant (NACE MR0175 compliant)  

 4. Performance Validation  

Field tests conducted by the China Geological Equipment Certification Center (CGEC) demonstrate:  

Average drilling efficiency in granite formations: 1.8 m/min (27% improvement over conventional systems).  

-40°C low-temperature torque retention: 90% of rated capacity.  

Deployed in national key projects including:  

• Sichuan-Tibet Railway  
• Baihetan Hydropower Station  

Specification Of MF Rod

>>R23

	Length		Diameter		Weight	Model No.
	[mm]	[ft-in]	[mm]	[in]	[kg]
	2095	6′ 10 1/2“	22	7/8″	6.4	MF-R23-H22-2095
MF rod, Hex 22, R23 – R23	3050	10′	22	7/8″	10	MF-R23-H22-3050

>>SR28

	Length		Diameter		Weight	Model No.
	[mm]	[ft-in]	[mm]	[in]	[kg]
	3050	10′	25	1″	12.1	MF-SR28-H25-3050
MF rod, Hex 25, SR28 – SR28
	1200	3′ 11 1/4″	28	1 1/8″	6.2	MF-SR28-H28-1200
MF rod, Hex 28, SR28 – SR28	2000	6′ 6 3/4″	28	1 1/8″	10.5	MF-SR28-H28-2000

>>R32

	Length		Diameter		Weight	Model No.
	[mm]	[ft-in]	[mm]	[in]	[kg]
	915	3′	32	1 1/4″	5.5	MF-R32-D32-915
MF rod, Round 32, R32 – R32	1220	4′	32	1 1/4″	7.5	MF-R32-D32-1220
	1525	5′	32	1 1/4″	9.1	MF-R32-D32-1525
	1830	6′	32	1 1/4″	11	MF-R32-D32-1830
	3050	10′	32	1 1/4″	18	MF-R32-D32-3050
	3660	12′	32	1 1/4″	21	MF-R32-D32-3660
	3700	12′ 1 5/8″	35	1 3/8″	29	MF-T38/R32-H35-3700
MF Drifter rod, Hex 35, T38 – R32	4305	14′ 1 1/2″	35	1 3/8″	34	MF-T38/R32-H35-4305

>>T35

	Length		Diameter		Weight	Model No.
	[mm]	[ft-in]	[mm]	[in]	[kg]
	1830	6′	39	1 1/2″	16	MF-T35-D39-1830
MF rod, Round 39, T35 – T35	3050	10′	39	1 1/2″	25	MF-T35-D39-3050
	3660	12′	39	1 1/2″	32	MF-T35-D39-3660
	4265	14′	39	1 1/2″	35	MF-T35-D39-4265
	4875	16′	39	1 1/2″	40	MF-T35-D39-4875
	4305	14′ 1 1/2″	39	1 1/2″	35	MF-T35/R35-D39-4305
MF Drifter rod, Round 39, T35 – R35	4915	16′ 1 1/2″	39	1 1/2″	40	MF-T35/R35-D39-4915
	5525	18′ 1 1/2″	39	1 1/2″	45	MF-T35/R35-D39-5525
	6135	20′ 1 1/2″	39	1 1/2″	50	MF-T35/R35-D39-6135

>>T38

	Length		Diameter		Weight	Model No.
	[mm]	[ft-in]	[mm]	[in]	[kg]
	915	3′	39	1 1/2″	8.1	MF-T38-D39-915
MF rod, Round 39, T38 – T38	1220	4′	39	1 1/2″	11	MF-T38-D39-1220
	1525	5′	39	1 1/2″	12	MF-T38-D39-1525
	1830	6′	39	1 1/2″	15	MF-T38-D39-1830
	3050	10′	39	1 1/2″	25	MF-T38-D39-3050
	3660	12′	39	1 1/2″	30	MF-T38-D39-3660
	4265	14′	39	1 1/2″	36	MF-T38-D39-4265
	4875	16′	39	1 1/2″	41	MF-T38-D39-4875

>>SR38

	Length		Diameter		Weight	Model No.
	[mm]	[ft-in]	[mm]	[in]	[kg]
	1830	6′	39	1 1/2″	15.3	MF-SR38-D39-1830
MF rod, Round 39, SR38 – SR38	3050	10′	39	1 1/2″	25	MF-SR38-D39-3050
	4920	16′ 1 3/4″	39	1 1/2″	40	MF-SR38-D39-4920

>>T45

	Length		Diameter		Weight	Model No.
	[mm]	[ft-in]	[mm]	[in]	[kg]
	1220	4′	46	1 3/4″	14	MF-T45-D46-1220
MF rod, Round 46, T45 – T45	1525	5′	46	1 3/4″	18	MF-T45-D46-1525
	1830	6′	46	1 3/4″	21	MF-T45-D46-1830
	3050	10′	46	1 3/4″	35	MF-T45-D46-3050
	3660	12′	46	1 3/4″	41	MF-T45-D46-3660
	4265	14′	46	1 3/4″	48	MF-T45-D46-4265
	6095	20′	46	1 3/4″	69	MF-T45-D46-6095

>>T51

	Length		Diameter		Weight	Model No.
	[mm]	[ft-in]	[mm]	[in]	[kg]
	1525	5′	52	2″	23	MF-T51-D52-1525
MF rod, Round 52, T51 – T51	1830	6′	52	2″	27	MF-T51-D52-1830
	3660	12′	52	2″	50	MF-T51-D52-3660
	4265	14′	52	2″	57	MF-T51-D52-4265
	5485	17’11″	52	2″	72	MF-T51-D52-5485
	6095	20′	52	2″	87	MF-T51-D52-6095

>>GT60

	Length		Diameter		Weight	Model No.
	[mm]	[ft-in]	[mm]	[in]	[kg]
	3660	12′	60	2 3/8″	73	MF-GT60-D60-3660
MF rod, Round 60, GT60 – GT60	4265	14′	60	2 3/8″	86	MF-GT60-D60-4265
	5485	18′	60	2 3/8″	107	MF-GT60-D60-5485
	6095	20′	60	2 3/8″	120	MF-GT60-D60-6095
	4265	14′	64	2 1/2″	92	MF-GT60-D64-4265
MF rod, Round 64, GT60 – GT60

Drill Rod Coupling Sleeve is a sleeve-shaped rock drilling component with internal threads for connecting shank adapter and drill rod, or drill rod and drill rod. We produce and provide three types of drill rod couplings – semi bridge couplings, full bridge couplings, and crossover couplings, which can meet the requirements of all applications.

Standard coupling sleeve

Standard coupling sleeve, also known as semi bridge coupling sleeve, has a section of the bridge without a thread in the middle. The threaded part of the drill pipe cannot be screwed through the bridge part of the coupling, and the end of the thread can closely adhere to the casing bridge zone. Standard coupling sleeve is particularly suitable for high-torque drilling rigs. Most rope thread (R thread) and trapezoidal thread (T thread) coupling sleeves are with half-bridge type. The half-bridge type is by far the most widely used couplings.

Full bridge coupling sleeve

Full bridge coupling sleeve can completely eliminate the looseness of the coupling sleeves along with the threaded connection. It is mainly used in surface mining, with better disassembly characteristics, firmer connections, and almost no clamping situation.

Crossover couplings

Crossover couplings are used to convert different thread types or thread diameter sizes.

Applications

Introduction to tapered drill rods

Tapered drill rod effective lengths are measured from the collar to the bit end, which are usually from 0.6meter to 3.6 meters.

Parameters

Shank sizes: Hex.19mm, Hex. 22mm, Hex.25mm
Taper degrees: 7°, 11°, 12°.
Length: 400 – 8000mm.

Specifications：

Drilling duties in tunneling, construction, mining, quarrying, etc.

22mm（7/8″）Tapered drill rods	L		Taper Degree	Weight (kg)
	mm	foot/inch
H22×108 Shank	500	1′ 5/8″	7o	1.5
	800	2′7 1/2″		2.4
	1000	3′3 3/8″		3
	1200	3′11 1/4″		3.6
	1500	4′ 11″		4.5
	1800	5′10 7/8″		5.5
	2000	6′6 3/4″		6.1
	2200	7′2 5/8″		6.7
	2500	8′2 3/8″		7.6
	3000	9′10 1/8″		9.1
	3500	11′5 3/4″		10.6
	4000	13′1 1/2″		12.1
	4500	14′9 1/8″		13.6
	5000	16′4 5/8″		15.1
	6000	19′8 1/4″		18.2
	7000	22′11 5/8″		21.2
	8000	26′ 3″		24.2
H22×108 Shank	800	2′7 1/2″	12o	2.4
	1200	3′11 1/4″		3.6
	1600	5′ 3″		4.9
	2200	7′2 5/8″		6.7
	2400	7′10 1/2″		7.3
	3200	10′ 6″		9.7
H22×108 Shank	1800	5′10 7/8″	7o	5.5
	2000	6′6 3/4″		6.1
	2500	8′2 3/8″		7.6
	3000	9′10 1/8″		9.1
	3500	11′5 3/4″		10.6
	4000	13′1 1/2″		12.1
	5000	16′4 5/8″		15.1

Introduction to tapered drill rods

Taper bits(pneumatic drill bit,air drill bits), especially Tapered button bits are the most popular tapered drill bits with a wide selection of head diameters from 26mm to 48mm. With carbide buttons hot pressed on the bit skirts, Pneumatic rock drill bits(tapered button bits) have a good drilling performance and are excellent in longevity.

Features

• Bit bodies manufactured from high grade steel and processed using state-of-the-art CNC machinery and heat treatment
• Alloy buttons are hot mounted into the drill bit, ensuring the bit good accuracy and durability;
• Reliability ensured by premium drill bit materials and premium alloy button;
• Different types designed for different drilling scenarios and rock conditions;
• Cost-effective, with competitive and reasonable price, our products offer 82%-92% lifespan of their famous branded counterparts.

Specifications：

Taper drill bits are connected to taper drill rods for drilling duties, suitable for tunneling, construction, mining, quarrying, etc.

Chisel Taper Bit	Cross Taper Bit	Button Taper Bit

	Taper Chisel Bits Taper Degree: 4°46′, 6°, 7° Diameter: 26-43mm
	Taper Cross Bits Taper Degree: 4°46′, 6°, 7°, 11°, 12° Diameter: 32-46mm
	4° 46′ Taper Button Bits Taper Degree: 4°46′ Diameter: 36-43mm
	7° Taper Button Bits Taper Degree: 7° Diameter: 32-41mm
	11° Taper Button Bits Taper Degree: 11° Diameter: 32-41mm
	12° Taper Button Bits Taper Degree: 12° Diameter: 30-42mm

Fully-carburized Taper Drill Rod is to increase the surface carbon content of the drill rod through the carburization craft, level up the surface hardness and the overall strength, and increase the service life of the taper drill rod. Compared with the conventional taper drill rod, Fully-carburized Taper Drill Rod is high in strength and good in abrasive resistance. Under the same industrial and mining, the life of fully-carburized taper drill rods is times of that of the common taper drill rods.

Taper degree: 4°46’, 6°, 7°, 11°, 12°

Shank specification: Hex.19mm, Hex. 22mm, Hex.25mm

Besides the regular drill rod length, our company can customize the product length according to the needs of the client.

Selecting the Right Bit

DTH (down-the-hole) drilling involves a drilling hammer at the bottom of a drill string, the hammer is powered by compressed air transmitted via drilling rod to drive piston and produce impact power, which is then delivered into rocks for drilling and crushing. DTH drilling can be applied in mining, quarrying, water well drilling, foundation piling, etc.

Features

1.Enhanced fatigue strength through advanced forging technology.
2.High quality carbide in optimal sizes for stable longevity.
3.Precision inlaying technology prevents carbide detachment.
4.State of the art heat treatment ensures superior hardness and wear resistance.
5.Tailored design and specialized processing for extended service life across various rock formations.

Bit Face Shape Selection

Button Shape Selection

DTH BIT WITHOUT FOOTVALVE

DHD Shank

SD Shank

MISSION Shank

QL Shank

DTH BIT WITHFOOT VALVE

DHD Shank

SD Shank

QL Shank

LARGE DIAMETER DTH BIT

Features
◆Military grade special steel minimizes breakage and cracking failures.
◆Advanced forging process enhances the fatigue strength of the drill bit steel body.
◆Ultrasonic and magnetic particle flaw detection identify and eliminate material and forging defects, reducing potential quality issues during drilling.
◆Larger carbides extend the service life of the drill bit
◆CNC machining ensures precise dimensions of the drill bit.
◆Specially designed foot valve provides high strength and toughness, ensuring reliable performance.
◆Shock absorbing plastic pin enhances the service life of the shank spline.

NumaShank

Introduction to dth hammers

The optimum range of hole size for blast hole drilling with DTH is 90 mm to 254 mm (3 ½”–10″). Smaller blast holes are generally drilled using tophammer, and larger holes generally use rotary machines.

In other applications, like foundation drilling, DTH hammers can be used with single bit in hole sizes up to . 750 mm (30″). With multiple hammer units CD (Cluster drills) drill holes up to 70″ or 1778 mm.

As a rule of thumb, the smallest hole diameter a DTH hammer can drill is its nominal size. A 4 inch hammer will drill a 4 inch (102 mm) hole. The limiting factor is the outside diameter of the hammer, because, as hole diameter reduces, airflow is restricted. Maximum hole size for production drilling is the nominal hammer size plus 1 inch, so for a 4 inch hammer the maximum hole size is 5 inch (127–130 mm).

Choosing the right hammer is largely determined by hole size and type of rock formation. Ideally, the size of the hammer should match the required hole dimension as closely as possible, leaving just enough space for cuttings to evacuate the hole.

Air Consumption / Operating Pressure

Product codes are a valuable tool to describe and identify the product. In the code structure we have tried to describe the product features with an alphanumeric system and not always 100% logical, but with the attached key you will be able to find the product you are looking for or alternative products.

Air Consumption / Operating Pressure

Specifications

Introduction to dth drill pipe

The DTH drill pipe consist of pipe and two adapters, box and pin. We use high strength and well-resistance alloy steel, inserting of high tensile seamless pipe, and according to different drilling depth, we can offer various thickness of pipe and material for customers’requirements.

DTH drill pipe Feature

• Diameter: 76mm, 89mm, 102mm, 114mm, 127mm, 140mm

• Length: 1000mm, 1500mm, 2000mm, 3000mm, 5000mm, 6000mm

• Thread: 2 3/8’’ API REG, 2 7/8’’ API REG, 3 1/2’’ API REG, 4 1/2’’ API REG，2 3/8″ API IF, 3 1/2″ API IF; BECO 6”, BECO 8”

• Wall thickness: 5.5mm/6.5mm/7.5mm/8.5mm/10mm

• Other spaecial size can be customized by customer’s drawing.

• Advanced heat treatment technology and friction welding mahcine.

Specifications

In case of jamming of any drilling tool in the boring process, the back hammer will assist you to solve the stuck problem by giving a backward impact power.

The back hammer may be mounted on the drill pipe joint between the borehole gripper and the swivel head, thus creating a combined effect of effective reverse impact and vibration.

The back hammer is consisted of three components and a plastic housing.

The housing acts both as an exhaust emissions guider and a muffler. With regards to the maintenance, it’s only necessary to keep it clean and the linking section we protected when the back hammer is not in use.

Our products are widely used in open-pit or underground mining, hydraulic engineering, bridge engineering, construction engineering, geotechnical engineering.

Oil gas drilling and other field. Our main products include DTH (down-the-hole) hammers and bits with capacity of drilling holes from 64mm–1020mm in diameter, DTH drilling tools with large diameter for deep hole drilling, eccentric casing system (ODEX) and concentric casing system, reserve circulation hammers and bits, drilling rig, rock drilling accessories and other relative equipment. With strong technical strength, we are making effort to create the best brand of Chinese drilling tools, and to be the top manufacturer in the world.

Advantages

Accurate sampling;
Environmental operation;
Compared with conventional drilling tools, RC tools flush cuttings inside the pipe with small resistance to effect easy flushing;
Special custom made alloy steel is adopted for sampling tube and shroud, and the surface of flushing pipe is hardened;
Good quality sealing rings are selected as follows:

Reverse Circulation Drilling Tools

A drilling system that flushes cuttings out from inside the pipe; Low air consumption; Drilling depth no more than 600m;Each bit should be matched with corresponding shroud.

Operating mechanism

Compressed air flows into the annular space of the double-wall drill pipe, then into the inner pipe from the drilling tools in the bottom of hole, and carries cuttings out to the ground through the inner pipe.

Applications

RC tools are used in geological exploration, water well drilling etc

Specifications

Notice: There is a chance that SHANDIKE may make changes on above-mentioned information. Product pictures and parameters about models, data, performances and specifications on this website are for reference only.

The Characteristics of RC hammer and bits

The RC bits are the tool cutting rock. SHANDIKE RC DTH bits are made of superior quality alloy steel and T.C carbides.

Advantages of the RC system

1. Reverse Circulation Technology
– Utilizes a unique air/fluid circulation system that transports cuttings upward through the center of the drill string, ensuring clean and uncontaminated samples.
– Minimizes hole deviation and improves drilling accuracy in fractured or unstable formations.

2.High-Performance Design

– Carbide Button Configuration: Strategically placed tungsten carbide buttons for maximum impact energy transfer and extended bit life.

– Optimized Flushing Channels: Ensures efficient removal of cuttings and reduces balling in sticky formations.

3. Durability & Adaptability

– Manufactured from premium-grade alloy steel with advanced heat treatment for exceptional wear and impact resistance.

– Compatible with a wide range of rock types, including hard, abrasive, and highly fractured formations.

4. Easy Maintenance

Modular design allows for quick replacement of worn components, reducing downtime and operational costs.

Technical Specifications
– Drill Bit Diameter: 90mm to 350mm (custom sizes available).
– Connection Type: Standard API or custom thread options (e.g., R32, COP, etc.).
– Operating Pressure: 15–30 bar.
– Impact Frequency: 1,200–2,400 blows per minute (BPM).
– Material: High-strength steel body with tungsten carbide inserts.

Applications
– Mineral Exploration: Achieves high-quality core samples for accurate resource evaluation.
– Water Well Drilling: Efficiently penetrates hard rock layers while maintaining borehole stability.
– Geotechnical Surveys: Ideal for soil and rock sampling in complex geological conditions.
– Blast Hole Drilling: Enhances productivity in quarrying and mining operations.

Advantages Over Conventional DTH Bits
✅ Higher Penetration Rates: Optimized energy transfer ensures faster drilling.
✅ Cleaner Samples: Reverse circulation minimizes contamination for precise analysis.
✅ Reduced Air Loss: Sealed design prevents air leakage, improving energy efficiency.
✅ Extended Service Life: Robust construction reduces wear in abrasive environments.

Why Choose Our RC DTH Bit?
– Custom Solutions: Tailored designs to meet specific project requirements.
– Global Certifications: Compliant with ISO 9001 and international drilling standards.
– Technical Support: 24/7 expert assistance for troubleshooting and optimization.

Applications

RC tools are used in geological exploration, water well drilling etc

Parameter:

Notice: There is a chance that SHANDIKE may make changes on above-mentioned information. Product pictures and parameters about models, data, performances and specifications on this website are for reference only.

Shandike GSE DHD DTH Hammers

DTH (down-the-hole) drilling involves a drilling hammer at the bottom of a drill string, the hammer is powered by compressed air transmitted via drilling rod to drive piston and produce impact power, which is then delivered into rocks for drilling and crushing. DTH drilling can be applied in mining, quarrying, water well drilling, foundation piling, etc. DTH hammer uses compressed air to produce impact power, thus to drive drill bits to crush rocks.

Features

• Premium material, fine CNC and heat-treatment manufacturing processes and optimized design;

• Good stability and reliability;

• High impact frequency;

• Lowered compressed air consumption;

• Long lifespan

Applications

Mining, quarrying, water well drilling, geothermal well drilling, foundation piling, etc.

Structure

	01 – Top Sub	02 – O Ring	03 – Check Valve	04 – Spring
	05 – Steel Washer	06 – Rigid Valve	07 – O Ring	08 – Internal Cylinder
	09 – Pistion	10 – Out Tube	11 – Bit Retainer Ring	12 – O Ring
	13 – Drive Sub

GSE-DHD3.5 DTH Hammer

GSE-DHD340 DTH Hammer

GSE-DHD350 DTH Hammer

GSE-DHD360 DTH Hammer

GSE-DHD380 DTH Hammer

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