ST58 drill bit extension rod

ST58 drill bit extension rod with male and female thread

This ST58 drill bit extension rod has a round cross-section. Compared to hexagonal rods, round rods are usually lighter and are commonly used for extended drilling operations in mining.

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Description

ST58 Drill Bit Extension Rod

Product Advantages

Using a drill bit extension results in straighter holes and faster drilling speed.

Technical Information of the ST58 Drill Bit Extension Rod

  • Length: 1525 mm and 1830 mm
  • Weight: Ranging from 34.0 kg to 40.0 kg
  • Specification: Female thread (internal thread) ST58 round 76 mm to male thread (external thread) ST58
  • Material: High-strength alloy structural steel, 23CrNi3Mo
  • Manufacturing process: Forging process, full carburizing process, high-frequency treatment, and phosphating treatment
Technical Parameters
ST58 drill bit extension rod with male and female thread
Extension rodL (mm)L (foot)D (mm)D (inch)ThreadOrder numberWeight (kg)

ST58-D76-ST58 drill tube

ST58-D76-ST58 drill tube

15255763ST58B2A0-7615-292934.0
18306763ST58B2A0-7618-292940.0
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ST58 drill bit extension rod with male and female thread