90mm Rock Borehole DTH Hammers Drill Bits

• Customization: Available
• After-sales Service: Warranty
• Warranty: 3 Month
• Model NO.: 90
• Certification: ISO 9001:2008
• Condition: New
• Motor: None
• Drill Hole Diameter: 200-250mm
• Drill Hole Depth: 100-150m
• Bit Type: Diamond Bit
• Drilling Way: Rotary
• Type: All
• Transport Package: Normal Package
• Specification: 50kg
• Trademark: HJG
• Origin: Hunan
• HS Code: 8421230000
• Production Capacity: 20000/Year

Product Description

Product Description

90mm Rock Borehole DTH Hammers Drill Bits

Drill bits are widely used in geology exploration, civil construction project, water well drilling and construction foundation project.

Application for drilling in medium soft formations with low compressive strength and high drillability, such as shale, soft limestone, soft dolomite and coal bed, etc.,(Protodikonov's Hardness Coefficient of Rock f=11).



Specification

IADC code	635
Bearing structure	Roller-Ball-Second Thrust-Roller-First Thrust/Sealing abrasion- resistance carbide button insert on the bearing surface.
Circulation type	Jet air
Cutting structure	Inner rows: ballistic Gage rows: spherical Gage bevel protection: flat
Pin connection	API 4 1/2" REG
Nozzle	φ18or20mm(3 pcs) Interchangeable
Metric bit diameter	229mm
Weight	50KG
Bit legs protection	Bit Legs Protection Carbide alloy button insert on the legs' surface,  back and top space of legs build up welding of abrasion-resistant alloy.
Operation suggestion	Weight on bit:27000-54000 Lbs Rotary speed:100-60 rpm Air pack pressure:0.2-0.4 Mpa

Why Choose Us
Kaishan group is a state-level large scale enterprise headquartered in Quzhou, Zhejiang province, China. Over the last sixty years Kaishan Group has grown to become a significant diversified engineering company developing high value machinery for industry worldwide. Kaishan group is the largest rock drill manufacturer in the world, and the largest air compressor manufacturer in China. Exports are shipped to over 25 countries .Today we produce over 30 000 rotary screw and 250 000 reciprocating compressors annually.By the year of 2014 our sales amount was close to RMB 2 billion. Kaishan group also has the high-quality customer service system.
Our company is the authorized agent of Kaishan Group, specializing in air compressor, energy-saving transformation service and mining engineering construction machinery. We provide comprehensive technical support and after-sales service to customers.

Kaishan is headquartered in Quzhou in Zhejiang, China. It has subsidiaries in Shanghai, Chgonqing, Guangdong, Taiwan, Hong Kong, Seattle, San Diego, Orlando, Melbourne, Singapore, Jakarta, Leobersdorf, Budapest and Belgrade, as well as offices in Russia, Colombia, Brazil, Korea, Malaysia and Thailand.

 

Advanced Equipment--Advanced equipment guarantees product quality. Over the years, we have received unanimous praise from overseas users for our integrity and high-quality product quality.

Packaging
The air compressor is guaranteed for one year. In addition to wearing parts and consumables, if the spare parts within the warranty period are broken, the company provides free spare parts replacement, but the buyer needs to pay the freight. Please ask customer service for specific warranty rules.

FAQ

Q1: Are you a factory or trade company?
A1: We are a factory. And we have ourselves trading company.


Q2: What is the exact address of your factory?
A2: Our Company is located in JNo.9 Kaixuan Ave West, Economic Zone Quzhou, Zhejiang, China


Q3: How long is your air compressor machine warranty?
A3: One year for the whole machine and two years for the screw air end, except for consumable spare parts.


Q4: Will you provide some spare parts for 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 requirement.


Q6: Which payment term can you accept?
A6: 30% T/T in advanced, 70% T/T against the B/L copy.


Q7: How long will you take to arrange production?
A7: 380V 50HZ we can deliver, the goods within 7-15 days. Other electricity or other colors we will delivery within 25-30 days.


Q8.What about the maintenance?

A8: First maintenance needs to be done after 500 hours, and then every 2000-3000 hours to do the normal maintenance, and consider the actual environment.


Q9: Can you accept OEM orders?
A9: Yes, with a professional design team, OEM orders are highly welcome.


Q10: Which trade term can you accept?
A10: Available trade terms: FOB, CIF, CFR, EXW, CPT, etc.