Top Hammer Extension Rod
Top Hammer Extension Rod Min.Order Quantity: 5 Piece/Pieces Supply Ability: 50000 Carton/Cartons per Month cordless nail drill Port: Tianjin port/Shanghai port/Guangzhou port Shenzhen/Qingdao Payment Terms: L/C,T/T,Western Union,MoneyGram,Paypal
Product Details
Top Hammer Extension Rod
Min.Order Quantity: 5 Piece/Pieces
Supply Ability: 50000 Carton/Cartons per Month cordless nail drill
Port: Tianjin port/Shanghai port/Guangzhou port Shenzhen/Qingdao
Payment Terms: L/C,T/T,Western Union,MoneyGram,Paypal
Product Description

More detail, welcome to send Inquiry or Email: [email protected]
Top hammer extension rod:
For extension rod, there are two shapes, one is round type, another one is hexagonal type. All extension rod are threaded and made by hollow drill steels.
This hollow hole are usually named flushing hole, used for transmitting water or air during drilling. Two ends threads can be used for connecting couplings, shanks, couplings or bits. Typically two ends of extension rods are male, while sometime one end is male and another one is female, then we call it M/F rod. We need couplings to connect extension rods, while for M/F rods, because one end is female, so couplings are not necessary.
Description:
Extension rod, other names are Extension drill steel, Extension drill rod, and Extension steel, M/F rod ( Speed rod ) , Produce Hexagonal and round cross sections, Hexagon rods are more rigid, heavier and transfer energy more efficiently, while increasing flushing. Round rods are generally lighter than hexagonal rods and are normally used in extension drilling applications.
Main Products:
1-12 inch middle-low/high air pressure DTH hammers & bits
Big hole high air pressure DTH hammer using in water well, oil, gas and construction drilling
Eccentric overburden drilling Equipment
Hole opener bit
Rock thread bit (R22, R25, R28, R32, R35, R38, T38, T45,T51, ST58,GT60)
Extension Rod, M/F Rod, M/m Rod, Drift Rod,
Shank adapter, coupling sleeves and all kinds of adapters

Advantages:
Compared with the oversea brands, our advantages are bellowing:
a. Our products can match over 95% against the original products
b. Price are competitive against the famous brands and best quality against the small factory
About Us:
1. Our factory has been specialized in manufacturing drilling tools and spare parts for over 10 years.
2. We have advanced technology and equipment.
3. Our technician has more than 13 year's professional working experience.
Hex. 22mm Tapered rod, 7 degree
Hex. 25mm Tapered rod, 7 degree
|
| Diameter | Weight (kg) | P/N | |
| mm | inch | ||
| 600 | 2" | 1.93 | H22-7-0600 |
| 800 | 2'6" | 2.54 | H22-7-0800 |
| 1000 | 3'3" | 3.15 | H22-7-1000 |
| 1200 | 3'9" | 3.76 | H22-7-1200 |
| 1500 | 4'11" | 4.68 | H22-7-1500 |
| 1600 | 5'3" | 4.98 | H22-7-1600 |
| 1800 | 5'9" | 5.59 | H22-7-1800 |
| 2000 | 6'7" | 6.2 | H22-7-2000 |
| 2200 | 7'2" | 6.81 | H22-7-2200 |
| 2300 | 7'6" | 7.12 | H22-7-2300 |
| 2400 | 7'9" | 7.42 | H22-7-2400 |
| 2500 | 8'2" | 7.73 | H22-7-2500 |
| 2600 | 8'8" | 8.03 | H22-7-2600 |
| 3000 | 9'10" | 9.25 | H22-7-3000 |
| 3500 | 11'5" | 10.78 | H22-7-3500 |
| 4000 | 13'1" | 12.3 | H22-7-4000 |
| 4500 | 14'8" | 13.83 | H22-7-4500 |
| 5000 | 16'4" | 15.35 | H22-7-5000 |
| 5500 | 17'1" | 16.88 | H22-7-5500 |
| 6000 | 19'7" | 18.3 | H22-7-6000 |
| 4000 | 13'1" | 16.1 | H25-7-4000 |
| 4700 | 15'4" | 18.9 | H25-7-4700 |
| 5000 | 16'4" | 22.1 | H25-7-5000 |
| 5500 | 18'1" | 22.1 | H25-7-5500 |
| 6000 | 19'7" | 24.1 | H25-7-6000 |
Hex.22mm Tapered rod, carburized, 11 degree
Data:
| Diameter | Weight (kg) | P/N | |
| mm | inch | ||
| 610 | 2' | 2.2 | H22-11-0610 |
| 1220 | 4' | 4.1 | H22-11-1220 |
| 1830 | 6' | 5.9 | H22-11-1830 |
| 2000 | 6'7'' | 6.4 | H22-11-2000 |
| 2435 | 8' | 7.8 | H22-11-2435 |
| 2600 | 8'8'' | 8.3 | H22-11-2600 |
| 3200 | 10'6'' | 10.1 | H22-11-3200 |
| 3655 | 1 2' | 11.5 | H22-11-3655 |
| 4000 | 1 3'1'' | 12.6 | H22-11-4000 |
| 4800 | 1 5'9'' | 14.9 | H22-11-4800 |
| 5600 | 1 8'4'' | 17.4 | H22-11-5600 |
| 6400 | 2 1' | 19.8 | H22-11-6400 |
| 7200 | 2 3'6'' | 22.2 | H22-11-7200 |
| 8000 | 2 6'2'' | 24.6 | H22-11-8000 |
Features:
- Made from material as same grade as internationally well-known brand
- Apply Boring Method processing as same as internationally well-known brand
- Entire heat-treatment ensuring the excellent quality
- Accurate dimension of taper degree perfectly matches the bit
- Very cost-effective


More detail, welcome to send Inquiry or Email: [email protected]
| We can design and manufacture according to customer's requirements of the Bit Dia.,No.of air holes,carbide button shape and the face shape | |
| Our Bit Face Shape Selection | |
| Double Gauge Face——This kind of face shape is suitable for fast penetration rates in medium to hard rock formation.Designed for high air pressures and good resistance to steel wash step gauge bit.dth hammer drill bit / low air pressure tungsten carbide dth drill button bits | |
| 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. | |
| Concave Face---The all-round application bit face specially for medium hard and homogenerous rock formations.Good hole deviation control and good flushing capacity. | |
| Flat Face---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. | |
Drop Center---For high penetration rates in soft to medium hard and fissured rock formations. Low to medium air pressures.Maximum hole deviation control.dth hammer drill bit / low air pressure tungsten carbide dth drill button bits | |
| Our Carbide Button Shape Selection | |
Spherical/Domed/Round Button are usually used as gauge buttons of DTH Bits, suitable for very abrasive and very hard formations. | |
Parabollic/Semi-Ballistic Button are usually used as gauge buttons and front buttons of DTH Bits,suitable for medium abrasive and hard formations. | |
Ballistic Button are usually used as front buttons of DTH Bits, suitable for medium abrasive and medium hard formations. They also can be used as gauge buttons if the rock is soft. | |
Conical/Cone/Sharp Button are usually used as front buttons of DTH Bits for soft formations where fast penetration rates are possible and button breakage is minimal. |

The information you may like to know before order:
1. Methods of Payment:
T/T (Telegraphic Transfer) or Western Union or L/C at sight
2. Handling time for an order
Within 10 days supplied from stock
3. Shipping way
Sample order: we suggest Courier express like DHL/UPS/TNT/FEDEX or by air
Bulk order: we suggest by air or by sea.
4. Quality Control
We have our own experienced QC.
There will be strict inspection and testing for every order before shipping out.
5. After Sale Services:
a. Our sales team will response for your question within 24 hours (Holidays Excluded)
b. Technical Support will be available in any time
c. Free replacement will provide once the failure confirmed caused by our product quality
Frequently asked questions:
1. How to order the products?
Send the inquiry with detail item description or with Model number.
2. How about the common packing?
If there is no packing demand, we will take it as sea-way packing.
3. Can I expect a quality products?
Yes. All our activities are accredited to ISO 9001:2008 and API, both in products and services, at the same time, mature production technology ensuring the quality satisfy international request.
4. How to check the product are the exact one you want?
If possible, please attach one reference picture to avoid any misunderstanding or any links from our website for we get a better understanding.
Our dth drill bits advantages:
1.High quality.
2.Competitive price:Cheap price because of direct factory price.
3.Problems solve ability:This ability comes from rich experiences of drill bits industry.
4.Fast delivery time:usually it takes 25 days for production.only 2 or 3 days if we have stock of your request size.
5.Best quality control:We have our own experienced QC team,there will be strict inspection and testing for every order before shipping out.
6.OEM,ODM service:your own request about product will be served well.
7.Best after service:We will go to your place to check and solve the problems if there
More detail, welcome to send Inquiry or Email: [email protected]

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