The H25 Tapered Drill Rod (Hex 25mm) is a heavy-duty drill steel designed for high-impact drilling. Unlike standard rods, Topking H25 rods undergo a special Carburization (Heat Treatment) process, which hardens the surface for wear resistance while keeping the core flexible to absorb shock waves.
This rod features a standard Hex 22mm x 108mm (or 159mm) shank, making it the perfect match for powerful pneumatic rock drills like YT28, YT29A, and Y19A. It is widely used in underground mining, tunneling, and dimensional stone quarrying where deep holes and high durability are required.
💡 Mining Cycle Solution
Step 1: Use H25 Rods + Q7 Bits to drill deep holes efficiently.
Step 2: Use
Topking Expansive Mortar (HSCA)
to split the rock block safely and reduce waste.
Technical Specifications:
Product Name: H25 Tapered Drill Rod
Steel Grade: High Carbon Alloy Steel (Carburized)
Shank Size: Hex 25mm * 108mm / 159mm
Taper Degree: 7°, 11°, 12°
Available Lengths: 0.6m, 1.2m, 2.4m, 3.2m ... up to 8.0m
Application: Granite, Basalt, Iron Ore Mining

(Topking H25 Carburized Drill Steel)
TAPERED DRILL ROD DIMENSIONS


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