KATDRILLS R Thread Self Drilling System

All-in-one construction
Combines drilling, grouting and anchoring in one single operation, no casing needed, highly efficient.

Excellent adaptability
Ideal for broken rock, soft soil, sand, backfill and water-rich formations where traditional anchors are difficult to install.

Full R-thread design
Continuous wave-type thread provides strong bonding strength, can be cut and connected freely at any position.

Hollow structure
Serves as drill rod, anchor bar and grouting pipe at the same time, ensuring full-length grouting and high anchoring force.

Good slag discharge
Unique thread shape improves chip removal, reduces hole collapse and blockage.

Stable performance
Uniform stress distribution, high tensile strength, fatigue resistance, long service life.

R Thread Self Drilling System
Thread:R25, R32, R38, R51
Self-Drilling Anchor Bolt	Self-Drilling Anchor Coupler	Self-Drilling Anchor Nuts	Self-Drilling Anchor Plate

Self-Drilling Anchor Bits

	EX	All steel cross bit for loose to medium dense ground formations.
	ES	Hardened button bit for weak cemented soil/sands and weak fractured rock formations.
	EC	Hardened arch bit for loose to dense soil or sand formations.
	EY	Hardened three-cutters bit for weak cemented soil/sand and weak fractured rock formations.
	EXX	TC cross bit for medium to strong fractured rock formations.
	ESS	TC button bit for strong fractured rock formations.
	ECC	TC arch bit for medium fractured rock formations.
	EYY	TC three cutters bit for medium fractured rock formations.

Bit Diameter

Dia.

100

115

130

150

175

220

250

280

300

350

R25

√

R32

√

R38

√

R51

√

Thread standard	ISO10208 / ISO 1720 / International standard
Thread direction	Left Hand / Right Hand
Hardness	HRA87 ~ HRA90 for TC bits, HRC48 ~ HRC55 for all steel bits

Our Service

At KAT Drilling Tools, we deliver customer-centric solutions for mining, construction, exploration, and oil & gas sectors-covering the full drill tool lifecycle.

Customized Design & Manufacturing

Bespoke drill bits/rods tailored to your drilling conditions, compliant with API/ISO standards. Rapid prototyping and batch production available.

Quality Control & Testing

Rigorous raw material, in-process, and final performance inspections. Detailed quality reports for every batch.

Technical Consultation & Support

Expert advice on tool selection, on-site training, and real-time troubleshooting to minimize downtime.

After-Sales Maintenance & Repair

Cost-effective maintenance, professional repair, and fast spare parts supply to extend tool lifespan.

Logistics & Supply Chain

Flexible delivery (bulk/JIT/emergency), secure packaging, and full customs/documentation support for global trade.

Long-Term Partnership

Customized service packages, dedicated account management, and continuous optimization based on your feedback.

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