188mm DHD380 Shank Hole Opener Drill Button Bits for Tunnel Hole Drilling

• Certification: ISO 9001:2000, SGS
• Standard: GB
• Surface Treatment: Spray-Paint
• Manufacturing Process: Forging
• Material: Carbon Steel
• Guide Dia.: 188mm
• Model NO.: MDO188D8
• Reamed Dia.: 254mm
• Weight: 147.4kg
• Shank: DHD380
• Transport Package: Wooden Case
• Trademark: MING
• Origin: China
• HS Code: 8207199000
• Production Capacity: 20000PCS/Year

Product Description

188mm DHD380 Shank Hole Opener Drill Button Bits for Tunnel Hole Drilling

Product Description

KINGDRILLING hammer bits are used with Down-the-hole hammers for drilling holes through a wide range of rocks types. In conjunction with DTH hammers, drill hammer bits are designed with a spline drive for rotating the bit in the ground. Drill bits are available in different sizes and different styles so they can drill a wide range of hole sizes. Our variety of Down the Hole (DTH) bits is manufactured using high quality materials to provide you with a fine balance between penetration capability and bit life.

- Stable drilling speed ensures efficient and accurate drilling.
- Fast drilling and extraction accelerates the drilling process.
- Made of high quality alloy steel material, excellent durability.
- High wear resistance guarantees longer service life.
- Easy maintenance, easy maintenance after use.

 

Technical Date

 

Model	Guide Dia. A (mm)	Reamed Dia B. (mm)	Qty.× Button Dia (mm)		Shank	Weight (kg)
			Gauge	Front
MDO95D3.5	95	130	6×14 2×14	4×11 3×11	DHD3.5	8.5
MDO80D3.5	80	165	8×14	8×13 6×11		15.1
MDO100D3.5	100	165	8×14	4×13 4×12 3×12		14.5
MDO110D3.5	110	165	8×14	4×13		15.2
MDO100D4	100	165	8×14	4×13 4×12 3×12	DHD340	14.5
MDO115D4	115	171.5	9×16	6×14		16.1
MDO75D5	75	152	8×18	6×14 2×14 2×14	DHD350R	35.2
MDO165D6	165	191	10×16	3×14 4×14	DHD360	74.5
MDOD108D6	108	220	10×18	12×18 2×14 2×14		79.3
MDO165D6S	165	254	12×18	12×16 4×14 5×14		65.3
MDO140D8	140	200	10×18	8×12 2×14 4×14	DHD380	10.6
MDO188D8	188	254	22×18	2×18		147.4
MDO152D8	152	305	14×18	10×18 16×16		107.8
MDO210D8	210	381	16×18	28×18		12.5
MDO216D12	216	312	18×18	15×18 6×16 6×14	DHD112	133.6
MDO254D12	254	375	18×18	12×18 15×18		136.2
MDO311D12	311	444.5	18×19	15×19 21×19		328.5

How to choose the suitable head face of the DTH drill bit?

1.  Concave:

Suitable for all kinds of formation, especially for deep well drilling, perpendicularity of the hole is wonderful.

1.  Convex: 

Suitable for the formation of moderate hardness stratum, drilling efficiency is good, borehole perpendicularity is moderate.

1.  Flat:        

Suitable for special hard formation stratum, especially for fracture, crack spacing and complex formation drilling effect is very good, has the good perpendicularity of the borehole.

Product Application

Application: Mining, Quarrying, Tunneling, Construction, Geological Exploration, Water-well Drilling, Oilfield & Gas Industries.

Company Profile

Wuhan Kingdrilling Diamond CO., LTD, one of the most professional private manufacturer specialized in researching and producing Overburden casing drilling system, DTH hammer, DTH drill bits, Core bits, Thread bits, Taper bits, Shank adapter, Drilling rods, Coal mining picks and related rock drilling tools.

Relying on the university resources and talent advantages in High-tech region, combining with multiple laboratories in universities, we have more power focused on developing the newest products system.

Our DTH drilling tools are produced with advanced technology from Britain. The company is equipped with advanced production facilities including electron-hydraulic forging hammer, multipurpose furnace heat treatment production line, high performance CNC machines, from raw materials prepared, forging, heat treatment, mechanical processing, a completed manufacturing system is finished in the factory. Strict quality control standards make sure stable quality. 

Whatever in construction, engineering, piling, water well drilling, tunneling, mining, quarrying or horizontal drilling industry, KINGDRILLING will do the best to satisfy your demands. "Kingdrilling, Keep On Striving", we'll always be in this line to serve our customers the most reliable products and the best support.

Our Advantages

1. High quality: We are the partners with a lot of big factories in China. We can provide the best quality products to you. 
2. Competitive price: Competitive price because of direct factory price. 
3. Fast delivery time: It usually takes 20 days for production.only 3 or 5 days if we have stock of your request size.
4. Best quality control: We have our own experienced QC team,there will be strict inspection and testing for each order before shipping out.
5. Problems solve ability: This ability comes from rich experiences of drill bits industry and reliable sales..
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 you need.

After Sales Service

1.Pre-sale service:

Act as a good adviser and assistant of clients enable them to get rich and generous returns on their investments .
1.Select equipment model;
2.Design and manufacture products according to client's special requirement ;
3.Train technical personnel for clients .

2.Services during the sale:

1.Pre-check and accept products ahead of delivery .
2. Help clients to draft solving plans .

3.After-sale services:

Provide considerate services to minimize clients' worries.
1.Complete After-sales service,professional engineers available to service machinery at home or oversea.
2. 24 hours technical support by e-mail.
3.Other essential technological service.

Packaging & Shipping

Packed by Carton or Wooden cases.
Delivery:

1. Goods in stock can be delivered within 5 days.
2. DTH Bits production time is about 15 days.
3. DTH Hammer product time is about 30 days.

Transprotation: By air, By Express or By sea / By train , according to your requests.

FAQ

1. How to order the products?

A: Please send the inquiry with detail item description or with Model number.

2. Can I expect a quality products?

A: Yes. mature production technology ensuring the quality satisfy international request.

3. How to check the product are the exact one you want?

A: If possible, please attach one reference picture to avoid any misunderstanding or any links from ourwebsite for a better understanding.

4. How to make sure the quality?

A: More than 40 Years engineer to make sure the quality, 100% inspection.

5. What is the general delivery time?

A: 15 working days for DTH bits.

20-25 working days for DTH hammer

3-5 working days for ex stock items.

6. Methods of Payment

A: T/T (Telegraphic Transfer) or Western Union.

 

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