Expansion Shell Cement Bolts Type AP-KRC

Expansion shell cement bolts type AP-KRC-ø42/ø20-M20 and AP-KRC-ø42/ø20-M24 are designed to be used for roof and ribs support in mine working areas as an independent or secondary support system in tunnels.

The following product options are available:

M20

The bars are made from reinforced ribbed bar of dn=20 mm and B500SP or B500B steel.

The expansion shell ø42/M20 with a diameter of ø42 mm is used to fix the bolt in the hole.

There are special sleeves (bulb) with a diameter of ø65 mm and plastic pumping pipe. For these sets 8mm thick round and square washers are applied with a hole of ø54 mm.

M24

The bars are made from reinforced ribbed bar of dr=21,70 mm of AP770 steel.

The expansion shell ø42/M24 with a diameter of ø42 mm is used to fix the bolt in the hole.

There are special sleeves (bulb) with a diameter of ø65 mm and plastic pumping pipe. For these sets 8mm thick round and square washers are applied with a hole of ø54 mm.

Advantages

1 Fast and easy installation
2 Made from reinforced ribbed bar
3 Increased load bearing capacity and durability

Product Features

Technical solution dedicated to the tunnelling sector, guaranteeing separation of the steel bolt from the rock with the use of a plastic pipe
The use of HDG and powder coating provides long-term anti-corrosion protection
Used for roof and ribs support in mine working areas as an independent or secondary support system
Used in civil tunnel construction

Product Options