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  •  Square New-type spiral cable-through drill pipe
Square New-type spiral cable-through drill pipe
The square-shaped spiral center cable-through drill pipe integrates internal cable passage, helical grooves, and threaded connectors, offering enhanced strength, wear resistance, and efficient coupling for directional drilling in coal mines

Product Name: Square New-type spiral cable-through drill pipe

Product Model:

Place of Origin: Shanxi, China

 

Product Description for New Square-shaped Spiral Center Cable-through Drill Pipe

The new square-shaped spiral center cable-through drill pipe mainly consists of a drill pipe and an internal cable passage device. Both ends of the drill rod feature threaded connectors, and the outer wall of the drill rod has helical grooves. The drill rod, helical grooves, and threaded connectors form an integrated structure. The threaded connectors at both ends of the cable-passing drill pipe are male and female connectors respectively, with internal and external threads designed for rapid connection between two drill rods. These threads offer high resistance to bending, torsion, and tension, along with excellent sealing properties. This drill rod is primarily used for directional horizontal drilling within coal mine tunnels, in conjunction with borehole display equipment to show real-time drilling trajectory data. Operators can adjust the drilling direction based on displayed data to achieve directional drilling.

Application Scope

The new square-shaped spiral center wired drill pipe is mainly used for directional drilling of long inclined boreholes in coal mines. It can also be used as a substitute for conventional smooth drill rods in hard, intact rock layers or broken coal seams.

Product Features

Male and female connectors and the rod body are joined using friction welding.

The wireline drill rod features a square-shaped structure, which more effectively stirs the drilling wall, facilitating rapid discharge of coal slag.

High strength, hardness, and impact toughness.

Designed with large-pitch trapezoidal threads, offering higher transmission efficiency and root strength.

Manufactured using integral milling technology, enhancing the wear resistance and overall strength of the drill rod.

Technical Specifications

Specification

Outer Diameter (mm)

Direction

Length (mm)

Pressure Resistance (MPa)

Conductor Resistance (Ω)

Insulation Resistance (MΩ)

Material

Joint Process

Φ70

70

Right-hand Spiral

1500-3000

≥12

<0.5

≥10

S135

Friction Welding

Φ73

73

Right-hand Spiral

1500-3000

≥12

<0.5

≥10

S135

Friction Welding

Φ89

89

Right-hand Spiral

1500-3000

≥12

<0.5

≥10

S135

Friction Welding

 

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