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About Najiou

About Najiou – Drilling Rig Manufacturer

Najiu’s history dates back to 2008. Initially, it was a supplier specializing in manufacturing spare parts for drilling rig manufacturers. After 18 years of production and operation, Najiu has its own workshops for producing drilling rigs, down-the-hole hammers, and drill pipes. Its drilling brand “Najiu” and its drilling tool brand are highly favored by numerous mining areas both domestically and internationally.

 

Adhering to the philosophy of “win-win cooperation,” Najiu has established strategic partnerships with many domestic counterparts, thereby developing into a supplier covering all high-quality rock drilling products in China, from underground rock drilling to open-pit down-the-hole hammer drilling to deep well drilling, providing one-stop services to rock drilling companies worldwide.

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Our main products

Underground Rock Drilling

● Underground Jumbo(Single/Double/Triple arm);
● Drifter/Extension/Speed/Guide rod(R32,R38,T45,T51,T60);
● Thread bits(R32,R38,T45,T51,T60);
● Shank adaptor(Atlas Copco, Furukawa, Montabert, Sandvik/Tanrockm, Ingersoll Rand, Doofor);
● Coupling(R32,R38,T45,T51,T60);
● Jack hammer(Y18,Y20,YT24,YT27,YT28,Y29A);
● Tapered rod(Taper 7°,11°,12°);
● Tapered bits(Taper 7°,11°,12°/ Dia: 32–50mm);
● Explosion-proof electric air compressor(Max. 30bar);
● Piston air compressor(Pressure: 5-10bar).

Open-pit Rock Drilling

● Separated DTH drill rig(Dia: 90-300mm);
● Anchor Rig(Dia: 90-300mm, Multi-angle work;)
● Integrated DTH drill rig(With compressor and Automatic rod change, with/without cab);
● Large integrated DTH drill rig(Rod length: 10 meters, Max. depth:50 meters);
● Roller drill rig(Rod length: 10 meters, with large torque power);
● Top hammer drill rig(Dia: 64-127mm);
● DTH hammer(Lower pressure, medium pressure, high pressure: 2’-24’);
● DTH bits(Lower pressure, medium pressure, high pressure: 2’-40’);
● Friction welding drill rod(Dia: 50-203mm, Length: 0.5-10 meters);
● Adaptor(API Standard);
● Portable screw air compressor(Diesel&Electric, 2/4 wheels, Pressure: 7-35bar);
● Drifter/Extension/Speed/Guide rod(R32,R38,T45,T51,T60);
● Thread bits(R32,R38,T45,T51,T60);
● Shank adaptor(Atlas Copco, Furukawa, Montabert, Sandvik/Tanrockm, Ingersoll Rand, Doofor);
● Coupling(R32,R38,T45,T51,T60);

Deep Water Well Drilling

● Crawler type water well drill rig(Air compressor&Mud pump, Max. drill depth:1500 meters);
● Trailer type water well drill rig(Air compressor&Mud pump, Max. drill depth:300 meters);
● Truck mounted water well drill rig(Brand new 6*4/8*4 SINOTRUCK, Air compressor & Mud pump mounted on the chassis, Max. drill depth:1500 meters);
● Screw air compressor(Max. Air capacity: 1350CFM, Max.Pressure: 37bar);
● High pressure DTH hammer(DHD, COP, QL, NUMA:4-24’);
● High pressure DTH bits(DHD, COP, QL, NUMA:4-40’);
● Friction welding drill rod(Dia: 50-203mm, Length: 0.5-10 meters);
● Adaptor(API Standard);
● Mud pump(BW250/BW450/BW850/BW1500);
● Foam pump;
● Tricone bits;
● PDC bits;
● Mud drag bits;
● Casing pipe(Dia: 4-20’);
● Automatic rod change tool;
Company Profile

Professional Drilling Rig Manufacturing Expertise

Najiou is a professional manufacturer of drilling equipment, focusing on water well drilling rigs, DTH drilling rigs, and geological drilling machines.

With years of industry experience, we are committed to providing high-performance and cost-effective drilling solutions to customers worldwide.

Reliable Manufacturing
Built around practical production standards, steady supply, and export-oriented service support.
Global Customer Focus
Suitable for distributors, contractors, and buyers looking for dependable drilling equipment solutions.
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