Expansion Shell Bolt with Forged Integral Head
Key Features:
1. Manufactured from high strength full threadbar with a hot forged integral head on one end and the other end has expansion shell.
2. Available in left hand or right hand thread.
3. Provide the same tensile strength on the entire length.
4. Expansion shell bolt with integral head, they are suitable for use in areas where roof is low or when long bolts tails are undesirable.
5. Nominal diameter 16mm/18mm/20mm can be supplied.
6. Corrosion protection may be provided by hot dip galvanizing or thermal diffusion.
Technical conditions of the Expansion shell bolt 16mm
Nominal diameter 16mm
Tensile strength Minimum 100kN
Square forged head
Forged head must be reused with 340Nm bolting
Expansion Shell Design
Length: 100-130mm
Length of the ribbed leaf: 75mm MIN
Expansion shell diameter 38mm to suit for borehole with 40-44mm diameter
Expansion shell must afford screwing for the whole length of bolt
Mechanical strength of the expansion shell: 90kN MIN
Torque of roof support tightening: 250-350N.m
Bearing Plate, Expansion Shell
Length & Package
Length: 450-3000mm as specified
Package: 100PCs-300PCs per bundle as specified
Others: Other dimensions and designs can be customized to suit particular applications.
