Products Description
Hollow drill steel is a cold-formed or extruded steel profile with a hexagonal hollow section. It features high strength, good rigidity, and excellent torsional resistance. With uniform wall thickness and accurate dimensions, it is widely used in machinery, construction, automotive components, engineering structures, and industrial equipment. It offers stable performance and cost-effective solutions for structural and mechanical applications.
We produce hexagonal hollow drill steel for rock drilling in various materials, such as 55SiMnMo, 23CrNi3Mo, 40SiMnCrNiMo, sanbar 20, sanbar 23, sanbar 61, sanbar 64 and etc.
|
Denomination |
Nominal size and tolerance |
Hol dia incl.ovality |
Eccentricity |
Weight |
||
|
H19 |
19 |
+0.3 -0.2 |
6.0 |
+0.7 -0.8 |
0.5 |
2.21 |
|
H22 |
22.2 |
+0.3 -0.2 |
6.7 |
+0.4 -0.4 |
0.6 |
3.03 |
|
H25 |
25.3 |
+0.4 -0.2 |
8 |
+0.5 -0.5 |
0.70 |
4.03 |
|
H28 |
28.6 |
+0.5 -0.3 |
9 |
+1.0 -0.5 |
0.8 |
5.23 |
|
H32 |
32.1 |
+1.0 |
10 |
+1.0 -0.5 |
0.90 |
6.58 |
|
H35 |
35.5 |
+1.0 |
10 |
+1.5 -0.5 |
1.0 |
8.03 |
Package: Wrapped with steel belt and then into bundles.
Productivity: 20000MT/ month
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.
Why choose us?
At KAT Drilling Tools, we stand out as your trusted drill tool partner for core advantages that deliver real value:
1. One-Stop Drill Tool Supply
2. Uncompromising Quality
3. Competitive Cost-Effectiveness
4. Professional Technical Support
5. End-to-End Service
6. Global Reliability
7. Trusted Long-Term Partnership
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