Comparing with chisel bits and cross bits, taper button bits have higher technology, much longer primary drilling time and higher drilling efficiency. According to the tungsten carbide insert, button bits can be divided into types of hemispherical, conical and parabolic button, etc.Made with high quality of raw material through special heat treatment ,especially, tungsten carbide of tapered button bits are from Boart long year,widely applied in Hand Hold ( short-hole) drilling system for dimensional stone quarrying.Diameter of bits from 30mm to 50mm with 4 ,6,7,11,12 degree, premium alloy tapered drill steel with Hexagonal.22mm and Hexagonal.25mm,The deliver capacity are very strong and can completely meet customer's requirements on delivery design,number of buttons is 4,5,6,7,8,9,7 buttons is very popular for hold held (short holes ) and blast drilling system.

Quzhou Zhongdu Machinery Technology Co., Ltd is industry and trade company which modern enterprise integrating scientific research, development, manufacture and trading. Based on integrity, responsibility and cooperation, our company have professional R&D and sales team, providing one-stop service for customers. Our company mainly products is Jack
Hammer,
Screw
Air
Compressor, Water well drilling rig,
Piston
Air
Compressor,
Drill
Rig
Parts,
Bearing, and
Other
Machinery
Hardware
Product etc.After many years of production and research and development, we have obtained more than 20 national patents. The products are sold at home and abroad and are well received by customers. Our products sold at home and abroad, after get the self-managemert import and export rights, our products are exported to Vietnam, Indonesia, Philippines, Cambodia, Pakistan, Afghanistan and other countries and regions.

Q1: Are you factory or trade company?
A1: We are factory. And we have our own trading company.Q2: What the exactly address of your factory?
A2: Our company is located in Zhenxing East Road, Qujiang District, Quzhou, Zhejiang, China.Q3: Warranty terms of your machine?
A3: One year warranty for the machine and technical support according to your needs.Q4: Will you provide some spare parts of the machines?
A4: Yes, of course.Q5: What about the voltage of products? Can they be customized?
A5: Yes, of course. The voltage can be customized according to your equipment.Q6: Which payment term can you accept?
A6: 30% T/T in advance, 70% T/T against the B/L copy.Q7: How long will you take to arrange production?
A7: 380V 50HZ we can delivery the goods within 7-15 days. Other electricity or other color we will delivery within 25-30 days.Q8: Can you accept OEM orders?
A8: Yes, with professional design team, OEM orders are highly welcome.Q9: Which trade term can you accept?
A9: Available trade terms: FOB, CIF, CFR, EXW, CPT, etc.