Fully threaded bolts
Double Corrosion Protection (DCP) bolts
- Bolt diameter
- ⌀20 mm / ⌀25 mm / ⌀32 mm
- Yield strength
- ⌀22 / 25 mm: 500 MPa / ⌀32 mm: 450 MPa
- Ultimate tensile strength
- ⌀22 / 25 mm: 700 MPa / ⌀32 mm: 620 MPa

Double Corrosion Protection (DCP) bolts provide reliable support in challenging geological conditions, especially in groundwater-prone areas. Enclosed in a polyethylene sheath, they ensure easy installation, immediate ground support, and a patented grouting system for long-term stability.
Features
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Stron support and full corrosion protection
Pre-tensioned expansion shell bolt with HDPE sheathing for immediate support, full corrosion protection, and efficient single-pass grouting of inner and outer annuluses.
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Efficient post-grouting
Grout adapter enables efficient and reliable post-grouting for enhanced ground support.
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Easy installation
Patented grouting system enables quick installation, minimizing downtime while ensuring reliable anchorage for demanding applications.
Poduct specifications
- Bolt diameter
- ⌀20 mm / ⌀25 mm / ⌀32 mm
- Yield strength
- ⌀22 / 25 mm: 500 MPa / ⌀32 mm: 450 MPa 1)
- Ultimate tensile strength
- ⌀22 / 25 mm: 700 MPa / ⌀32 mm: 620 MPa 2)
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1) minimum
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2) typical
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