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Products

Hollow strand

  • High strength steel wire strand
  • Flexible central steel hollow tube for grout injection
PHOTO

Hollow strand has corrugated hollow tube for grout injection. It is developed for roof bolt for underground mining to be able to make drill hole

Mechanical properties

Class Nominal dia.
[mm]
Min. Breaking strength
[kN]
Min. Elongation
[%]
60 tonne 27.9 588 3.5

Applications

Figure

Hollow strand has corrugated hollow tube for grout injection. It is developed for roof bolt for underground mining to be able to make drill hole.

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