Swell Friction Rock Bolt (Mn12, Mn16, Mn24)
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Swell friction rock bolt (swellex) Mn12: Minimum breaking load, expanded profile> 100 kN, Minimum elongation, expanded profile, A5 > 20%* Inflation pressure 30 Mpa Original tube size: D41 mm x 2 mm Mn16: Minimum breaking load, expanded profile> 140...
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