High Air Pressure Top Hammer Drill Bits , Flat Face QL50 140mm Down The Hole Bits

QL50-140mm (5 1/2")Button Bit DTH Bit For QL50 Hammer With Alloy Steel For Mine Application

Shanks: QL50

Application: Mining Drilling Hole Blasting

Button and Bit Face Shape Selection:

1. 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.

2. 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 theload and wear on the gauge buttons, but poor hole deviation control.

3. Concave Face

The all-around application bit face specifically for medium hard and homogeneous rock formations.

1. Methods of Payment
T/T (Telegraphic Transfer) or Western Union or L/C at sight

2. Handling time for an order
Only 2 or 3 days if we have stock on your request size.
Based on order quantity, normally it takes 15 days for production.

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 Services
(1). Our sales team will response for your question within 24 hours (Holidays Excluded)
(2). Technical Support will be available in any time
(3). Free replacement will provide once the failure confirmed caused by our product quality

6.How can we trust your company?
We support Alibaba trade insurance. Protecting products quality, shipment on time and your covered amount.

Any other questions,please feel free to contact with me online or by phone.

Changsha Tianhe Drilling Tools and Machinery Co., Ltd., is a professional geotechnical drilling tools manufacturer since 2002. We’re located in Jinzhou New District,Ningxiang County, Changsha,Hunan province.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. They are widely used in mining,water well and geothermal drilling, anchoring, foundation and infrastructure, piling,tunneling and other construction and geotechnical engineering. They are exported to Sweden,Swiss,Finland,Italy, France, Germany, Australia,South Korea,South Africa,Chile, Brazi and other 30 countries.Teamwhole is proved to be the right choice by more than 1000 customers all over the world.

Our registered capital is 6.5 million USD, and monthly capacity is about 1000 sets of hammers. We have about 300 employees,among them there are 80 specialized technicians,30 of them have over 20 years working experiences in DTH drilling tools research and development. We have the ISO9001:2008 certificate,over 30 technical patents, and 3 registered trademarks.We’re a council unit of China Drilling Steel and Drilling Tools Association,the director unit of China Heat Treatment Association, the well-known trademark enterprise of Hunan Province, the high-tech enterprise of Hunan Province, the geotechnical drilling equipment engineering of Changsha City Technology research center and enterprise technology center.

The company always guide themselves with the service concept "focus on users' requirements and meet to customers" needs " , flexibly apply the unique technology, strictly comply with the standards of ISO9001 quality system, professionally commit to research, development and application, and sincerely produce the rock drilling tools with most specifications, easy operation, reliable quality and good prices for all the global users. With strong technical strength, we are making efforts to creat the best brand of Chinese drilling tools, and to be the top manufacturer in the world.