Gravlock® Girder Couplers
Hi All
Below details for Boulton Graveloks.
For fast secure coupling of tube to ‘I’ beam flanges up to 45mm thick whilst comfortably exceeding the BS1139 slip requirements.
NB: must always be used in pairs.
Weight: 1.47kg
Codes:
Sheradised: 007890
Slip of coupler along section: 10kN
Slip of tube through coupler: 6.5kN
Hanging load vertically: 30kN
Maximum safe working loads to BS5973.
All loads are based on PAIRS of Gravlock uniformly and concentrically loaded.
Must admit though I tend not to use them for slip along the section as this will depend on the surface of the section, torque on the bolt, vibrations, etc.
Always prefer to have something else to stop slip along section.
All the best
Chris Eng